13022172 has 18 divisors (see below), whose sum is σ = 32917248. Its totient is φ = 4340712.

The previous prime is 13022171. The next prime is 13022231. The reversal of 13022172 is 27122031.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13022171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180828 + ... + 180899.

It is an arithmetic number, because the mean of its divisors is an integer number (1828736).

Almost surely, 2^13022172 is an apocalyptic number.

13022172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13022172 is an abundant number, since it is smaller than the sum of its proper divisors (19895076).

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

13022172 is a wasteful number, since it uses less digits than its factorization.

13022172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361737 (or 361732 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 13022172 is about 3608.6246687623. The cubic root of 13022172 is about 235.2670692388.

The spelling of 13022172 in words is "thirteen million, twenty-two thousand, one hundred seventy-two".