13220492 has 48 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 5820672.

The previous prime is 13220461. The next prime is 13220521. The reversal of 13220492 is 29402231.

13220492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123503 + ... + 123609.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^13220492 is an apocalyptic number.

It is an amenable number.

13220492 is a deficient number, since it is larger than the sum of its proper divisors (12906868).

13220492 is a wasteful number, since it uses less digits than its factorization.

13220492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13220492 is about 3635.9994499450. Note that the first 3 decimals coincide. The cubic root of 13220492 is about 236.4553832999.

The spelling of 13220492 in words is "thirteen million, two hundred twenty thousand, four hundred ninety-two".