157857828 has 48 divisors (see below), whose sum is σ = 385491456. Its totient is φ = 50215680.

The previous prime is 157857823. The next prime is 157857857. The reversal of 157857828 is 828758751.

It is not an unprimeable number, because it can be changed into a prime (157857823) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24250 + ... + 30062.

It is an arithmetic number, because the mean of its divisors is an integer number (8031072).

Almost surely, 2^157857828 is an apocalyptic number.

It is an amenable number.

157857828 is an abundant number, since it is smaller than the sum of its proper divisors (227633628).

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

157857828 is a wasteful number, since it uses less digits than its factorization.

157857828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924 (or 5922 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 51.

The square root of 157857828 is about 12564.1485187019. The cubic root of 157857828 is about 540.4498172444.

The spelling of 157857828 in words is "one hundred fifty-seven million, eight hundred fifty-seven thousand, eight hundred twenty-eight".