13988812 has 24 divisors (see below), whose sum is σ = 25961600. Its totient is φ = 6583680.

The previous prime is 13988801. The next prime is 13988813. The reversal of 13988812 is 21888931.

It is a super-2 number, since 2×13988812² = 391373722342688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13988813) 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, 3064 + ... + 6112.

Almost surely, 2^13988812 is an apocalyptic number.

It is an amenable number.

13988812 is a deficient number, since it is larger than the sum of its proper divisors (11972788).

13988812 is a wasteful number, since it uses less digits than its factorization.

13988812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3119 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 13988812 is about 3740.1620285758. The cubic root of 13988812 is about 240.9500077087.

The spelling of 13988812 in words is "thirteen million, nine hundred eighty-eight thousand, eight hundred twelve".