115019780 has 24 divisors (see below), whose sum is σ = 252044352. Its totient is φ = 44007392.

The previous prime is 115019753. The next prime is 115019783. The reversal of 115019780 is 87910511.

It is not an unprimeable number, because it can be changed into a prime (115019783) 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, 124562 + ... + 125481.

It is an arithmetic number, because the mean of its divisors is an integer number (10501848).

Almost surely, 2^115019780 is an apocalyptic number.

115019780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115019780 is an abundant number, since it is smaller than the sum of its proper divisors (137024572).

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

115019780 is a wasteful number, since it uses less digits than its factorization.

115019780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250075 (or 250073 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 115019780 is about 10724.7275023657. The cubic root of 115019780 is about 486.3222923908.

The spelling of 115019780 in words is "one hundred fifteen million, nineteen thousand, seven hundred eighty".