157251840 has 144 divisors (see below), whose sum is σ = 518816256. Its totient is φ = 40550400.

The previous prime is 157251827. The next prime is 157251859. The reversal of 157251840 is 48152751.

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 15 ways as a sum of consecutive naturals, for example, 118380 + ... + 119700.

Almost surely, 2^157251840 is an apocalyptic number.

157251840 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 157251840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259408128).

157251840 is an abundant number, since it is smaller than the sum of its proper divisors (361564416).

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

157251840 is a wasteful number, since it uses less digits than its factorization.

157251840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 157251840 is about 12540.0095693743. The cubic root of 157251840 is about 539.7573669909.

The spelling of 157251840 in words is "one hundred fifty-seven million, two hundred fifty-one thousand, eight hundred forty".