137304730 has 16 divisors (see below), whose sum is σ = 247287240. Its totient is φ = 54891072.

The previous prime is 137304721. The next prime is 137304757. The reversal of 137304730 is 37403731.

It can be written as a sum of positive squares in 4 ways, for example, as 137288089 + 16641 = 11717^2 + 129^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25516 + ... + 30424.

Almost surely, 2^137304730 is an apocalyptic number.

137304730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137304730 is a deficient number, since it is larger than the sum of its proper divisors (109982510).

137304730 is a wasteful number, since it uses less digits than its factorization.

137304730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7713.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 137304730 is about 11717.7101005273. The cubic root of 137304730 is about 515.8956106559.

Subtracting from 137304730 its reverse (37403731), we obtain a palindrome (99900999).

The spelling of 137304730 in words is "one hundred thirty-seven million, three hundred four thousand, seven hundred thirty".