115204128 has 48 divisors (see below), whose sum is σ = 325676736. Its totient is φ = 35447040.

The previous prime is 115204069. The next prime is 115204129. The reversal of 115204128 is 821402511.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×115204128² = 26543982216480768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 115204098 and 115204107.

It is not an unprimeable number, because it can be changed into a prime (115204129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44908 + ... + 47403.

It is an arithmetic number, because the mean of its divisors is an integer number (6784932).

Almost surely, 2^115204128 is an apocalyptic number.

It is an amenable number.

115204128 is an abundant number, since it is smaller than the sum of its proper divisors (210472608).

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

115204128 is a wasteful number, since it uses less digits than its factorization.

115204128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92337 (or 92329 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 115204128 is about 10733.3185921224. The cubic root of 115204128 is about 486.5819714584.

Adding to 115204128 its reverse (821402511), we get a palindrome (936606639).

The spelling of 115204128 in words is "one hundred fifteen million, two hundred four thousand, one hundred twenty-eight".