13213140 has 48 divisors (see below), whose sum is σ = 37161600. Its totient is φ = 3507840.

The previous prime is 13213139. The next prime is 13213153. The reversal of 13213140 is 4131231.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 20625 + ... + 21255.

It is an arithmetic number, because the mean of its divisors is an integer number (774200).

Almost surely, 2^13213140 is an apocalyptic number.

13213140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13213140 is an abundant number, since it is smaller than the sum of its proper divisors (23948460).

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

13213140 is a wasteful number, since it uses less digits than its factorization.

13213140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13213140 is about 3634.9883080967. The cubic root of 13213140 is about 236.4115437230.

Adding to 13213140 its reverse (4131231), we get a palindrome (17344371).

The spelling of 13213140 in words is "thirteen million, two hundred thirteen thousand, one hundred forty".