40172022 has 24 divisors (see below), whose sum is σ = 94952520. Its totient is φ = 12173280.

The previous prime is 40172021. The next prime is 40172051. The reversal of 40172022 is 22027104.

It is a super-2 number, since 2×40172022² = 3227582703136968, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 40171986 and 40172004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40172021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101247 + ... + 101642.

It is an arithmetic number, because the mean of its divisors is an integer number (3956355).

Almost surely, 2^40172022 is an apocalyptic number.

40172022 is an abundant number, since it is smaller than the sum of its proper divisors (54780498).

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

40172022 is a wasteful number, since it uses less digits than its factorization.

40172022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202908 (or 202905 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 40172022 is about 6338.1402635158. The cubic root of 40172022 is about 342.4847440236.

Adding to 40172022 its reverse (22027104), we get a palindrome (62199126).

The spelling of 40172022 in words is "forty million, one hundred seventy-two thousand, twenty-two".