157621872 has 80 divisors (see below), whose sum is σ = 430686720. Its totient is φ = 49536000.

The previous prime is 157621847. The next prime is 157621883. The reversal of 157621872 is 278126751.

It is a self number, because there is not a number n which added to its sum of digits gives 157621872.

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, 365497 + ... + 365927.

It is an arithmetic number, because the mean of its divisors is an integer number (5383584).

Almost surely, 2^157621872 is an apocalyptic number.

157621872 is a gapful number since it is divisible by the number (12) 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 157621872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215343360).

157621872 is an abundant number, since it is smaller than the sum of its proper divisors (273064848).

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

157621872 is a wasteful number, since it uses less digits than its factorization.

157621872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 856 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 157621872 is about 12554.7549557926. The cubic root of 157621872 is about 540.1804061146.

The spelling of 157621872 in words is "one hundred fifty-seven million, six hundred twenty-one thousand, eight hundred seventy-two".