157700440 has 64 divisors (see below), whose sum is σ = 366832800. Its totient is φ = 60982272.

The previous prime is 157700429. The next prime is 157700453. The reversal of 157700440 is 44007751.

It is a junction number, because it is equal to n+sod(n) for n = 157700399 and 157700408.

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, 154251 + ... + 155269.

Almost surely, 2^157700440 is an apocalyptic number.

157700440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157700440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183416400).

157700440 is an abundant number, since it is smaller than the sum of its proper divisors (209132360).

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

157700440 is a wasteful number, since it uses less digits than its factorization.

157700440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 157700440 is about 12557.8835796483. The cubic root of 157700440 is about 540.2701437546.

The spelling of 157700440 in words is "one hundred fifty-seven million, seven hundred thousand, four hundred forty".