Search a number
-
+
20675432070 = 2325477961871
BaseRepresentation
bin10011010000010110…
…100000111010000110
31222100220110202212100
4103100112200322012
5314320402311240
613255334132530
71331233162416
oct232026407206
958326422770
1020675432070
11884a819147
1240101b1146
131c465c4697
141001ca6646
158101d8e30
hex4d05a0e86

20675432070 has 96 divisors (see below), whose sum is σ = 55595704320. Its totient is φ = 5327749440.

The previous prime is 20675432069. The next prime is 20675432077. The reversal of 20675432070 is 7023457602.

It is a happy number.

20675432070 is a `hidden beast` number, since 20 + 6 + 7 + 543 + 20 + 70 = 666.

20675432070 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20675432077) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303235 + ... + 365105.

It is an arithmetic number, because the mean of its divisors is an integer number (579121920).

Almost surely, 220675432070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20675432070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27797852160).

20675432070 is an abundant number, since it is smaller than the sum of its proper divisors (34920272250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20675432070 is a wasteful number, since it uses less digits than its factorization.

20675432070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62010 (or 62007 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

Adding to 20675432070 its reverse (7023457602), we get a palindrome (27698889672).

The spelling of 20675432070 in words is "twenty billion, six hundred seventy-five million, four hundred thirty-two thousand, seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 47 79 90 94 141 158 235 237 282 395 423 470 474 705 711 790 846 1185 1410 1422 2115 2370 3555 3713 4230 7110 7426 11139 18565 22278 33417 37130 55695 61871 66834 111390 123742 167085 185613 309355 334170 371226 556839 618710 928065 1113678 1856130 2784195 2907937 4887809 5568390 5815874 8723811 9775618 14539685 14663427 17447622 24439045 26171433 29079370 29326854 43619055 43990281 48878090 52342866 73317135 87238110 87980562 130857165 146634270 219951405 229727023 261714330 439902810 459454046 689181069 1148635115 1378362138 2067543207 2297270230 3445905345 4135086414 6891810690 10337716035 20675432070