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115140402 = 23213492053
BaseRepresentation
bin1101101110011…
…10011100110010
322000122201221100
412313032130302
5213433443102
615231505230
72565451206
oct667163462
9260581840
10115140402
1159aa2763
1232688216
131ab15020
1411412b06
15a195a1c
hex6dce732

115140402 has 24 divisors (see below), whose sum is σ = 268661484. Its totient is φ = 35427744.

The previous prime is 115140391. The next prime is 115140409. The reversal of 115140402 is 204041511.

It can be written as a sum of positive squares in 2 ways, for example, as 84437721 + 30702681 = 9189^2 + 5541^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (115140409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245793 + ... + 246260.

Almost surely, 2115140402 is an apocalyptic number.

115140402 is an abundant number, since it is smaller than the sum of its proper divisors (153521082).

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

115140402 is a wasteful number, since it uses less digits than its factorization.

115140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492074 (or 492071 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 115140402 is about 10730.3495749207. The cubic root of 115140402 is about 486.4922361267.

Adding to 115140402 its reverse (204041511), we get a palindrome (319181913).

The spelling of 115140402 in words is "one hundred fifteen million, one hundred forty thousand, four hundred two".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 492053 984106 1476159 2952318 4428477 6396689 8856954 12793378 19190067 38380134 57570201 115140402