115401538 has 16 divisors (see below), whose sum is σ = 198573120. Its totient is φ = 49272336.

The previous prime is 115401529. The next prime is 115401547. The reversal of 115401538 is 835104511.

It is an interprime number because it is at equal distance from previous prime (115401529) and next prime (115401547).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11556 + ... + 19087.

It is an arithmetic number, because the mean of its divisors is an integer number (12410820).

Almost surely, 2^115401538 is an apocalyptic number.

115401538 is a deficient number, since it is larger than the sum of its proper divisors (83171582).

115401538 is a wasteful number, since it uses less digits than its factorization.

115401538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30921.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 115401538 is about 10742.5107865899. The cubic root of 115401538 is about 486.8597431395.

The spelling of 115401538 in words is "one hundred fifteen million, four hundred one thousand, five hundred thirty-eight".