137515328 has 14 divisors (see below), whose sum is σ = 272882106. Its totient is φ = 68757632.

The previous prime is 137515319. The next prime is 137515393. The reversal of 137515328 is 823515731.

137515328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 69089344 + 68425984 = 8312^2 + 8272^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074275 + ... + 1074402.

It is an arithmetic number, because the mean of its divisors is an integer number (19491579).

Almost surely, 2^137515328 is an apocalyptic number.

It is an amenable number.

137515328 is a deficient number, since it is larger than the sum of its proper divisors (135366778).

137515328 is an equidigital number, since it uses as much as digits as its factorization.

137515328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148689 (or 2148679 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 137515328 is about 11726.6929694607. The cubic root of 137515328 is about 516.1592361545.

The spelling of 137515328 in words is "one hundred thirty-seven million, five hundred fifteen thousand, three hundred twenty-eight".