13640934 has 8 divisors (see below), whose sum is σ = 27281880. Its totient is φ = 4546976.

The previous prime is 13640911. The next prime is 13640947. The reversal of 13640934 is 43904631.

It is a sphenic number, since it is the product of 3 distinct primes.

13640934 is an admirable number.

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, 1136739 + ... + 1136750.

It is an arithmetic number, because the mean of its divisors is an integer number (3410235).

Almost surely, 2^13640934 is an apocalyptic number.

13640934 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13640934 is a wasteful number, since it uses less digits than its factorization.

13640934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273494.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 13640934 is about 3693.3635076986. The cubic root of 13640934 is about 238.9358791123.

The spelling of 13640934 in words is "thirteen million, six hundred forty thousand, nine hundred thirty-four".