13621270 has 16 divisors (see below), whose sum is σ = 26404560. Its totient is φ = 5029344.

The previous prime is 13621261. The next prime is 13621303. The reversal of 13621270 is 7212631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52260 + ... + 52519.

It is an arithmetic number, because the mean of its divisors is an integer number (1650285).

Almost surely, 2^13621270 is an apocalyptic number.

13621270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13621270 is a deficient number, since it is larger than the sum of its proper divisors (12783290).

13621270 is a wasteful number, since it uses less digits than its factorization.

13621270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104799.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13621270 is about 3690.7004755195. The cubic root of 13621270 is about 238.8210117432.

The spelling of 13621270 in words is "thirteen million, six hundred twenty-one thousand, two hundred seventy".