13720130 has 16 divisors (see below), whose sum is σ = 24803064. Its totient is φ = 5464320.

The previous prime is 13720129. The next prime is 13720159. The reversal of 13720130 is 3102731.

It can be written as a sum of positive squares in 4 ways, for example, as 10029889 + 3690241 = 3167^2 + 1921^2 .

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 13720099 and 13720108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437 + ... + 5256.

Almost surely, 2^13720130 is an apocalyptic number.

13720130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13720130 is a deficient number, since it is larger than the sum of its proper divisors (11082934).

13720130 is a wasteful number, since it uses less digits than its factorization.

13720130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 13720130 is about 3704.0693837994. The cubic root of 13720130 is about 239.3973886442.

Adding to 13720130 its reverse (3102731), we get a palindrome (16822861).

The spelling of 13720130 in words is "thirteen million, seven hundred twenty thousand, one hundred thirty".