157865268 has 96 divisors (see below), whose sum is σ = 419069952. Its totient is φ = 45820800.

The previous prime is 157865251. The next prime is 157865287. The reversal of 157865268 is 862568751.

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 31 ways as a sum of consecutive naturals, for example, 707805 + ... + 708027.

It is an arithmetic number, because the mean of its divisors is an integer number (4365312).

Almost surely, 2^157865268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157865268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209534976).

157865268 is an abundant number, since it is smaller than the sum of its proper divisors (261204684).

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

157865268 is a wasteful number, since it uses less digits than its factorization.

157865268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 443 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 157865268 is about 12564.4445957631. Note that the first 3 decimals coincide. The cubic root of 157865268 is about 540.4583077609.

The spelling of 157865268 in words is "one hundred fifty-seven million, eight hundred sixty-five thousand, two hundred sixty-eight".