157720884 has 12 divisors (see below), whose sum is σ = 368015424. Its totient is φ = 52573624.

The previous prime is 157720873. The next prime is 157720897. The reversal of 157720884 is 488027751.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 6571692 + ... + 6571715.

It is an arithmetic number, because the mean of its divisors is an integer number (30667952).

Almost surely, 2^157720884 is an apocalyptic number.

It is an amenable number.

157720884 is an abundant number, since it is smaller than the sum of its proper divisors (210294540).

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

157720884 is a wasteful number, since it uses less digits than its factorization.

157720884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13143414 (or 13143412 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 157720884 is about 12558.6975439334. The cubic root of 157720884 is about 540.2934892941.

The spelling of 157720884 in words is "one hundred fifty-seven million, seven hundred twenty thousand, eight hundred eighty-four".