157287146 has 12 divisors (see below), whose sum is σ = 240474822. Its totient is φ = 77156976.

The previous prime is 157287139. The next prime is 157287157. The reversal of 157287146 is 641782751.

It can be written as a sum of positive squares in 3 ways, for example, as 155625625 + 1661521 = 12475^2 + 1289^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8381 + ... + 19616.

Almost surely, 2^157287146 is an apocalyptic number.

157287146 is a deficient number, since it is larger than the sum of its proper divisors (83187676).

157287146 is an equidigital number, since it uses as much as digits as its factorization.

157287146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28105 (or 28052 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 157287146 is about 12541.4172245405. The cubic root of 157287146 is about 539.7977591999.

The spelling of 157287146 in words is "one hundred fifty-seven million, two hundred eighty-seven thousand, one hundred forty-six".