13213970 has 48 divisors (see below), whose sum is σ = 29882304. Its totient is φ = 4087200.

The previous prime is 13213951. The next prime is 13213979. The reversal of 13213970 is 7931231.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13213979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100805 + ... + 100935.

It is an arithmetic number, because the mean of its divisors is an integer number (622548).

Almost surely, 2^13213970 is an apocalyptic number.

13213970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13213970 is an abundant number, since it is smaller than the sum of its proper divisors (16668334).

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

13213970 is a wasteful number, since it uses less digits than its factorization.

13213970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13213970 is about 3635.1024744840. The cubic root of 13213970 is about 236.4164937821.

The spelling of 13213970 in words is "thirteen million, two hundred thirteen thousand, nine hundred seventy".