13213860 has 48 divisors (see below), whose sum is σ = 40364352. Its totient is φ = 3203200.

The previous prime is 13213853. The next prime is 13213867. The reversal of 13213860 is 6831231.

It is an interprime number because it is at equal distance from previous prime (13213853) and next prime (13213867).

It is a self number, because there is not a number n which added to its sum of digits gives 13213860.

It is not an unprimeable number, because it can be changed into a prime (13213867) 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, 9351 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (840924).

Almost surely, 2^13213860 is an apocalyptic number.

13213860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13213860 is an abundant number, since it is smaller than the sum of its proper divisors (27150492).

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

13213860 is a wasteful number, since it uses less digits than its factorization.

13213860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044 (or 20042 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13213860 is about 3635.0873442051. The cubic root of 13213860 is about 236.4158377621.

The spelling of 13213860 in words is "thirteen million, two hundred thirteen thousand, eight hundred sixty".