13729580 has 12 divisors (see below), whose sum is σ = 28832160. Its totient is φ = 5491824.

The previous prime is 13729567. The next prime is 13729633. The reversal of 13729580 is 8592731.

It is a self number, because there is not a number n which added to its sum of digits gives 13729580.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343220 + ... + 343259.

It is an arithmetic number, because the mean of its divisors is an integer number (2402680).

Almost surely, 2^13729580 is an apocalyptic number.

13729580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13729580 is an abundant number, since it is smaller than the sum of its proper divisors (15102580).

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

13729580 is a wasteful number, since it uses less digits than its factorization.

13729580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686488 (or 686486 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 13729580 is about 3705.3447882754. The cubic root of 13729580 is about 239.4523391954.

The spelling of 13729580 in words is "thirteen million, seven hundred twenty-nine thousand, five hundred eighty".