22372040 has 32 divisors (see below), whose sum is σ = 51511680. Its totient is φ = 8740032.

The previous prime is 22372039. The next prime is 22372043. The reversal of 22372040 is 4027322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22372043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4784 + ... + 8223.

It is an arithmetic number, because the mean of its divisors is an integer number (1609740).

Almost surely, 2^22372040 is an apocalyptic number.

22372040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22372040 is an abundant number, since it is smaller than the sum of its proper divisors (29139640).

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

22372040 is a wasteful number, since it uses less digits than its factorization.

22372040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13061 (or 13057 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22372040 is about 4729.9090900355. The cubic root of 22372040 is about 281.7746132628.

Adding to 22372040 its reverse (4027322), we get a palindrome (26399362).

The spelling of 22372040 in words is "twenty-two million, three hundred seventy-two thousand, forty".