13640892 has 12 divisors (see below), whose sum is σ = 31828776. Its totient is φ = 4546960.

The previous prime is 13640867. The next prime is 13640911. The reversal of 13640892 is 29804631.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×13640892³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

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, 568359 + ... + 568382.

It is an arithmetic number, because the mean of its divisors is an integer number (2652398).

Almost surely, 2^13640892 is an apocalyptic number.

13640892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13640892 is an abundant number, since it is smaller than the sum of its proper divisors (18187884).

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

13640892 is a wasteful number, since it uses less digits than its factorization.

13640892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136748 (or 1136746 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 13640892 is about 3693.3578218201. The cubic root of 13640892 is about 238.9356338868.

The spelling of 13640892 in words is "thirteen million, six hundred forty thousand, eight hundred ninety-two".