115677780 has 24 divisors (see below), whose sum is σ = 323897952. Its totient is φ = 30847392.

The previous prime is 115677773. The next prime is 115677797. The reversal of 115677780 is 87776511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963922 + ... + 964041.

It is an arithmetic number, because the mean of its divisors is an integer number (13495748).

Almost surely, 2^115677780 is an apocalyptic number.

115677780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115677780 is an abundant number, since it is smaller than the sum of its proper divisors (208220172).

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

115677780 is a wasteful number, since it uses less digits than its factorization.

115677780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927975 (or 1927973 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 42.

The square root of 115677780 is about 10755.3605239434. The cubic root of 115677780 is about 487.2479064790.

The spelling of 115677780 in words is "one hundred fifteen million, six hundred seventy-seven thousand, seven hundred eighty".