Search a number
-
+
1230025173 = 313194493697
BaseRepresentation
bin100100101010000…
…1011000111010101
310011201111202022220
41021110023013111
510004341301143
6322015412553
742324020136
oct11124130725
93151452286
101230025173
11581354133
122a3b24159
13167aa7a60
14b9507c8d
1572ebbd83
hex4950b1d5

1230025173 has 32 divisors (see below), whose sum is σ = 1863792000. Its totient is φ = 715309056.

The previous prime is 1230025163. The next prime is 1230025177. The reversal of 1230025173 is 3715200321.

It is not a de Polignac number, because 1230025173 - 25 = 1230025141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230025177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330861 + ... + 334557.

It is an arithmetic number, because the mean of its divisors is an integer number (58243500).

Almost surely, 21230025173 is an apocalyptic number.

1230025173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1230025173 is a deficient number, since it is larger than the sum of its proper divisors (633766827).

1230025173 is a wasteful number, since it uses less digits than its factorization.

1230025173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 1230025173 is about 35071.7147142822. The cubic root of 1230025173 is about 1071.4485789610.

Adding to 1230025173 its reverse (3715200321), we get a palindrome (4945225494).

It can be divided in two parts, 12300 and 25173, that added together give a palindrome (37473).

The spelling of 1230025173 in words is "one billion, two hundred thirty million, twenty-five thousand, one hundred seventy-three".

Divisors: 1 3 13 19 39 57 247 449 741 1347 3697 5837 8531 11091 17511 25593 48061 70243 110903 144183 210729 332709 913159 1659953 2739477 4979859 21579389 31539107 64738167 94617321 410008391 1230025173