13639270 has 16 divisors (see below), whose sum is σ = 25995168. Its totient is φ = 5134720.

The previous prime is 13639243. The next prime is 13639277. The reversal of 13639270 is 7293631.

It is a super-2 number, since 2×13639270² = 372059372265800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13639277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39946 + ... + 40285.

It is an arithmetic number, because the mean of its divisors is an integer number (1624698).

Almost surely, 2^13639270 is an apocalyptic number.

13639270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13639270 is a deficient number, since it is larger than the sum of its proper divisors (12355898).

13639270 is a wasteful number, since it uses less digits than its factorization.

13639270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80255.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 13639270 is about 3693.1382319106. The cubic root of 13639270 is about 238.9261631239.

The spelling of 13639270 in words is "thirteen million, six hundred thirty-nine thousand, two hundred seventy".