137208730 has 16 divisors (see below), whose sum is σ = 247424544. Its totient is φ = 54783760.

The previous prime is 137208713. The next prime is 137208761. The reversal of 137208730 is 37802731.

It is a junction number, because it is equal to n+sod(n) for n = 137208692 and 137208701.

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, 6556 + ... + 17815.

It is an arithmetic number, because the mean of its divisors is an integer number (15464034).

Almost surely, 2^137208730 is an apocalyptic number.

137208730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137208730 is a deficient number, since it is larger than the sum of its proper divisors (110215814).

137208730 is a wasteful number, since it uses less digits than its factorization.

137208730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24941.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 137208730 is about 11713.6130207550. The cubic root of 137208730 is about 515.7753488957.

The spelling of 137208730 in words is "one hundred thirty-seven million, two hundred eight thousand, seven hundred thirty".