22392012 has 12 divisors (see below), whose sum is σ = 52248056. Its totient is φ = 7464000.

The previous prime is 22392011. The next prime is 22392037. The reversal of 22392012 is 21029322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 22392012.

It is not an unprimeable number, because it can be changed into a prime (22392011) 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 3 ways as a sum of consecutive naturals, for example, 932989 + ... + 933012.

Almost surely, 2^22392012 is an apocalyptic number.

It is an amenable number.

22392012 is an abundant number, since it is smaller than the sum of its proper divisors (29856044).

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

22392012 is a wasteful number, since it uses less digits than its factorization.

22392012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866008 (or 1866006 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22392012 is about 4732.0198647089. The cubic root of 22392012 is about 281.8584370712.

It can be divided in two parts, 223 and 92012, that added together give a triangular number (92235 = T₄₂₉).

The spelling of 22392012 in words is "twenty-two million, three hundred ninety-two thousand, twelve".