13813772 has 24 divisors (see below), whose sum is σ = 27734784. Its totient is φ = 5897232.

The previous prime is 13813771. The next prime is 13813783. The reversal of 13813772 is 27731831.

It is not an unprimeable number, because it can be changed into a prime (13813771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7793 + ... + 9399.

It is an arithmetic number, because the mean of its divisors is an integer number (1155616).

Almost surely, 2^13813772 is an apocalyptic number.

It is an amenable number.

13813772 is an abundant number, since it is smaller than the sum of its proper divisors (13921012).

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

13813772 is a wasteful number, since it uses less digits than its factorization.

13813772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1923 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 13813772 is about 3716.6883108488. The cubic root of 13813772 is about 239.9407955815.

The spelling of 13813772 in words is "thirteen million, eight hundred thirteen thousand, seven hundred seventy-two".