13880644 has 6 divisors (see below), whose sum is σ = 24291134. Its totient is φ = 6940320.

The previous prime is 13880639. The next prime is 13880677. The reversal of 13880644 is 44608831.

13880644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10640644 + 3240000 = 3262^2 + 1800^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1735077 + ... + 1735084.

Almost surely, 2^13880644 is an apocalyptic number.

It is an amenable number.

13880644 is a deficient number, since it is larger than the sum of its proper divisors (10410490).

13880644 is a wasteful number, since it uses less digits than its factorization.

13880644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470165 (or 3470163 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 13880644 is about 3725.6736303654. The cubic root of 13880644 is about 240.3273542196.

The spelling of 13880644 in words is "thirteen million, eight hundred eighty thousand, six hundred forty-four".