22202040 has 64 divisors (see below), whose sum is σ = 76124160. Its totient is φ = 5074560.

The previous prime is 22202027. The next prime is 22202069. The reversal of 22202040 is 4020222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

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, 12376 + ... + 14055.

It is an arithmetic number, because the mean of its divisors is an integer number (1189440).

Almost surely, 2^22202040 is an apocalyptic number.

22202040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22202040 is an abundant number, since it is smaller than the sum of its proper divisors (53922120).

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

22202040 is a wasteful number, since it uses less digits than its factorization.

22202040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26452 (or 26448 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22202040 is about 4711.9040737265. The cubic root of 22202040 is about 281.0590842607.

Adding to 22202040 its reverse (4020222), we get a palindrome (26222262).

The spelling of 22202040 in words is "twenty-two million, two hundred two thousand, forty".