13172022 has 12 divisors (see below), whose sum is σ = 28539420. Its totient is φ = 4390668.

The previous prime is 13171987. The next prime is 13172023. The reversal of 13172022 is 22027131.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 731779 = 13172022 / (1 + 3 + 1 + 7 + 2 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 13171986 and 13172004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172023) 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, 365872 + ... + 365907.

It is an arithmetic number, because the mean of its divisors is an integer number (2378285).

Almost surely, 2^13172022 is an apocalyptic number.

13172022 is an abundant number, since it is smaller than the sum of its proper divisors (15367398).

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

13172022 is a wasteful number, since it uses less digits than its factorization.

13172022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731787 (or 731784 counting only the distinct ones).

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

The square root of 13172022 is about 3629.3280369787. The cubic root of 13172022 is about 236.1660590341.

Adding to 13172022 its reverse (22027131), we get a palindrome (35199153).

The spelling of 13172022 in words is "thirteen million, one hundred seventy-two thousand, twenty-two".