22012672 has 36 divisors (see below), whose sum is σ = 47939976. Its totient is φ = 10004480.

The previous prime is 22012667. The next prime is 22012673. The reversal of 22012672 is 27621022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (22012673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093 + ... + 6724.

It is an arithmetic number, because the mean of its divisors is an integer number (1331666).

Almost surely, 2^22012672 is an apocalyptic number.

22012672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22012672 is an abundant number, since it is smaller than the sum of its proper divisors (25927304).

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

22012672 is an equidigital number, since it uses as much as digits as its factorization.

22012672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7844 (or 7830 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 22012672 is about 4691.7664050973. The cubic root of 22012672 is about 280.2577218946.

Adding to 22012672 its reverse (27621022), we get a palindrome (49633694).

The spelling of 22012672 in words is "twenty-two million, twelve thousand, six hundred seventy-two".