157120780 has 12 divisors (see below), whose sum is σ = 329953680. Its totient is φ = 62848304.

The previous prime is 157120739. The next prime is 157120801. The reversal of 157120780 is 87021751.

It is a happy number.

157120780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3928000 + ... + 3928039.

It is an arithmetic number, because the mean of its divisors is an integer number (27496140).

Almost surely, 2^157120780 is an apocalyptic number.

157120780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157120780 is an abundant number, since it is smaller than the sum of its proper divisors (172832900).

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

157120780 is a wasteful number, since it uses less digits than its factorization.

157120780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856048 (or 7856046 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 157120780 is about 12534.7828062556. The cubic root of 157120780 is about 539.6073734894.

The spelling of 157120780 in words is "one hundred fifty-seven million, one hundred twenty thousand, seven hundred eighty".