157287228 has 48 divisors (see below), whose sum is σ = 420774144. Its totient is φ = 44795520.

The previous prime is 157287203. The next prime is 157287233. The reversal of 157287228 is 822782751.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 157287228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24976 + ... + 30632.

It is an arithmetic number, because the mean of its divisors is an integer number (8766128).

Almost surely, 2^157287228 is an apocalyptic number.

It is an amenable number.

157287228 is an abundant number, since it is smaller than the sum of its proper divisors (263486916).

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

157287228 is a wasteful number, since it uses less digits than its factorization.

157287228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6002 (or 6000 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 157287228 is about 12541.4204937080. The cubic root of 157287228 is about 539.7978530059.

The spelling of 157287228 in words is "one hundred fifty-seven million, two hundred eighty-seven thousand, two hundred twenty-eight".