157566228 has 12 divisors (see below), whose sum is σ = 367654560. Its totient is φ = 52522072.

The previous prime is 157566209. The next prime is 157566229. The reversal of 157566228 is 822665751.

157566228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×157566228² = 49654232412295968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157566228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157566229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6565248 + ... + 6565271.

It is an arithmetic number, because the mean of its divisors is an integer number (30637880).

Almost surely, 2^157566228 is an apocalyptic number.

It is an amenable number.

157566228 is an abundant number, since it is smaller than the sum of its proper divisors (210088332).

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

157566228 is a wasteful number, since it uses less digits than its factorization.

157566228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13130526 (or 13130524 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 157566228 is about 12552.5387073691. The cubic root of 157566228 is about 540.1168334309.

The spelling of 157566228 in words is "one hundred fifty-seven million, five hundred sixty-six thousand, two hundred twenty-eight".