137428768 has 12 divisors (see below), whose sum is σ = 270562950. Its totient is φ = 68714368.

The previous prime is 137428763. The next prime is 137428769. The reversal of 137428768 is 867824731.

It can be written as a sum of positive squares in only one way, i.e., 136702864 + 725904 = 11692^2 + 852^2 .

It is not an unprimeable number, because it can be changed into a prime (137428763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2147293 + ... + 2147356.

Almost surely, 2^137428768 is an apocalyptic number.

It is an amenable number.

137428768 is a deficient number, since it is larger than the sum of its proper divisors (133134182).

137428768 is an equidigital number, since it uses as much as digits as its factorization.

137428768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294659 (or 4294651 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The square root of 137428768 is about 11723.0016633966. The cubic root of 137428768 is about 516.0509133906.

The spelling of 137428768 in words is "one hundred thirty-seven million, four hundred twenty-eight thousand, seven hundred sixty-eight".