13137730 has 16 divisors (see below), whose sum is σ = 23755320. Its totient is φ = 5231232.

The previous prime is 13137727. The next prime is 13137743. The reversal of 13137730 is 3773131.

It can be written as a sum of positive squares in 4 ways, for example, as 9554281 + 3583449 = 3091^2 + 1893^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13137695 and 13137704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579 + ... + 5158.

Almost surely, 2^13137730 is an apocalyptic number.

13137730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13137730 is a deficient number, since it is larger than the sum of its proper divisors (10617590).

13137730 is a wasteful number, since it uses less digits than its factorization.

13137730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973.

The product of its (nonzero) digits is 1323, while the sum is 25.

The square root of 13137730 is about 3624.6006676598. The cubic root of 13137730 is about 235.9609362711.

It can be divided in two parts, 13137 and 730, that multiplied together give a triangular number (9590010 = T₄₃₇₉).

The spelling of 13137730 in words is "thirteen million, one hundred thirty-seven thousand, seven hundred thirty".