157865000 has 40 divisors (see below), whose sum is σ = 369889410. Its totient is φ = 63144000.

The previous prime is 157864999. The next prime is 157865017. The reversal of 157865000 is 568751.

It can be written as a sum of positive squares in 5 ways, for example, as 964324 + 156900676 = 982^2 + 12526^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10787 + ... + 20786.

Almost surely, 2^157865000 is an apocalyptic number.

157865000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157865000 is an abundant number, since it is smaller than the sum of its proper divisors (212024410).

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

157865000 is an equidigital number, since it uses as much as digits as its factorization.

157865000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31599 (or 31580 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 157865000 is about 12564.4339307428. The cubic root of 157865000 is about 540.4580019243.

The spelling of 157865000 in words is "one hundred fifty-seven million, eight hundred sixty-five thousand".