157970000 has 50 divisors (see below), whose sum is σ = 382485378. Its totient is φ = 63184000.

The previous prime is 157969991. The next prime is 157970023. The reversal of 157970000 is 79751.

It can be written as a sum of positive squares in 5 ways, for example, as 44249104 + 113720896 = 6652^2 + 10664^2 .

It is a tau number, because it is divible by the number of its divisors (50).

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 9 ways as a sum of consecutive naturals, for example, 2102 + ... + 17898.

Almost surely, 2^157970000 is an apocalyptic number.

157970000 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 157970000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191242689).

157970000 is an abundant number, since it is smaller than the sum of its proper divisors (224515378).

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

157970000 is an equidigital number, since it uses as much as digits as its factorization.

157970000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15825 (or 15804 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 157970000 is about 12568.6116973992. The cubic root of 157970000 is about 540.5777994587.

The spelling of 157970000 in words is "one hundred fifty-seven million, nine hundred seventy thousand".