115139430 has 96 divisors (see below), whose sum is σ = 360172800. Its totient is φ = 24929856.

The previous prime is 115139377. The next prime is 115139441. The reversal of 115139430 is 34931511.

It is a junction number, because it is equal to n+sod(n) for n = 115139394 and 115139403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7161 + ... + 16779.

It is an arithmetic number, because the mean of its divisors is an integer number (3751800).

Almost surely, 2^115139430 is an apocalyptic number.

115139430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115139430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180086400).

115139430 is an abundant number, since it is smaller than the sum of its proper divisors (245033370).

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

115139430 is a wasteful number, since it uses less digits than its factorization.

115139430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9658 (or 9655 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 115139430 is about 10730.3042827312. The cubic root of 115139430 is about 486.4908671552.

The spelling of 115139430 in words is "one hundred fifteen million, one hundred thirty-nine thousand, four hundred thirty".