13809630 has 32 divisors (see below), whose sum is σ = 33242400. Its totient is φ = 3671552.

The previous prime is 13809613. The next prime is 13809641. The reversal of 13809630 is 3690831.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16666 + ... + 17474.

It is an arithmetic number, because the mean of its divisors is an integer number (1038825).

Almost surely, 2^13809630 is an apocalyptic number.

13809630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13809630 is an abundant number, since it is smaller than the sum of its proper divisors (19432770).

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

13809630 is a wasteful number, since it uses less digits than its factorization.

13809630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13809630 is about 3716.1310525868. The cubic root of 13809630 is about 239.9168114464.

The spelling of 13809630 in words is "thirteen million, eight hundred nine thousand, six hundred thirty".