13639074 has 32 divisors (see below), whose sum is σ = 28916160. Its totient is φ = 4276800.

The previous prime is 13639063. The next prime is 13639079. The reversal of 13639074 is 47093631.

It is not an unprimeable number, because it can be changed into a prime (13639079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20304 + ... + 20964.

It is an arithmetic number, because the mean of its divisors is an integer number (903630).

Almost surely, 2^13639074 is an apocalyptic number.

13639074 is an abundant number, since it is smaller than the sum of its proper divisors (15277086).

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

13639074 is a wasteful number, since it uses less digits than its factorization.

13639074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 13639074 is about 3693.1116961175. Note that the first 3 decimals coincide. The cubic root of 13639074 is about 238.9250186406.

The spelling of 13639074 in words is "thirteen million, six hundred thirty-nine thousand, seventy-four".