137600730 has 24 divisors (see below), whose sum is σ = 357762132. Its totient is φ = 36693504.

The previous prime is 137600719. The next prime is 137600759. The reversal of 137600730 is 37006731.

It can be written as a sum of positive squares in 2 ways, for example, as 116834481 + 20766249 = 10809^2 + 4557^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 137600694 and 137600703.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 764359 + ... + 764538.

Almost surely, 2^137600730 is an apocalyptic number.

137600730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137600730 is an abundant number, since it is smaller than the sum of its proper divisors (220161402).

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

137600730 is a wasteful number, since it uses less digits than its factorization.

137600730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528910 (or 1528907 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 137600730 is about 11730.3337548426. Note that the first 3 decimals coincide. The cubic root of 137600730 is about 516.2660652369.

The spelling of 137600730 in words is "one hundred thirty-seven million, six hundred thousand, seven hundred thirty".