Search a number
-
+
1020223230 = 235132615957
BaseRepresentation
bin111100110011110…
…101111011111110
32122002201201011120
4330303311323332
54042134120410
6245122531410
734165516515
oct7463657376
92562651146
101020223230
114839868a4
12245806b66
1313349b0b0
14996d367c
155e878570
hex3ccf5efe

1020223230 has 32 divisors (see below), whose sum is σ = 2636885664. Its totient is φ = 251131776.

The previous prime is 1020223229. The next prime is 1020223247. The reversal of 1020223230 is 323220201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307589 + ... + 1308368.

It is an arithmetic number, because the mean of its divisors is an integer number (82402677).

Almost surely, 21020223230 is an apocalyptic number.

1020223230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020223230 is an abundant number, since it is smaller than the sum of its proper divisors (1616662434).

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

1020223230 is a wasteful number, since it uses less digits than its factorization.

1020223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615980.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1020223230 is about 31940.9334553641. The cubic root of 1020223230 is about 1006.6961383172.

Adding to 1020223230 its reverse (323220201), we get a palindrome (1343443431).

The spelling of 1020223230 in words is "one billion, twenty million, two hundred twenty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 2615957 5231914 7847871 13079785 15695742 26159570 34007441 39239355 68014882 78478710 102022323 170037205 204044646 340074410 510111615 1020223230