157077780 has 48 divisors (see below), whose sum is σ = 440490624. Its totient is φ = 41823360.

The previous prime is 157077757. The next prime is 157077799. The reversal of 157077780 is 87770751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47790 + ... + 50970.

It is an arithmetic number, because the mean of its divisors is an integer number (9176888).

Almost surely, 2^157077780 is an apocalyptic number.

157077780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157077780 is an abundant number, since it is smaller than the sum of its proper divisors (283412844).

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

157077780 is a wasteful number, since it uses less digits than its factorization.

157077780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016 (or 4014 counting only the distinct ones).

The product of its (nonzero) digits is 96040, while the sum is 42.

The square root of 157077780 is about 12533.0674617190. The cubic root of 157077780 is about 539.5581433492.

The spelling of 157077780 in words is "one hundred fifty-seven million, seventy-seven thousand, seven hundred eighty".