13621902 has 32 divisors (see below), whose sum is σ = 31776000. Its totient is φ = 3891384.

The previous prime is 13621889. The next prime is 13621903. The reversal of 13621902 is 20912631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621903) 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, 1252 + ... + 5367.

It is an arithmetic number, because the mean of its divisors is an integer number (993000).

Almost surely, 2^13621902 is an apocalyptic number.

13621902 is an abundant number, since it is smaller than the sum of its proper divisors (18154098).

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

13621902 is an equidigital number, since it uses as much as digits as its factorization.

13621902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6645 (or 6631 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 13621902 is about 3690.7860951293. The cubic root of 13621902 is about 238.8247052937.

The spelling of 13621902 in words is "thirteen million, six hundred twenty-one thousand, nine hundred two".