13642812 has 18 divisors (see below), whose sum is σ = 34486088. Its totient is φ = 4547592.

The previous prime is 13642807. The next prime is 13642859. The reversal of 13642812 is 21824631.

13642812 is a `hidden beast` number, since 1 + 3 + 642 + 8 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×13642812² = 372252638534688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189448 + ... + 189519.

Almost surely, 2^13642812 is an apocalyptic number.

13642812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13642812 is an abundant number, since it is smaller than the sum of its proper divisors (20843276).

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

13642812 is a wasteful number, since it uses less digits than its factorization.

13642812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378977 (or 378972 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 13642812 is about 3693.6177387488. The cubic root of 13642812 is about 238.9468436839.

The spelling of 13642812 in words is "thirteen million, six hundred forty-two thousand, eight hundred twelve".