20772372 has 24 divisors (see below), whose sum is σ = 48580000. Its totient is φ = 6908256.

The previous prime is 20772371. The next prime is 20772373. The reversal of 20772372 is 27327702.

It is an interprime number because it is at equal distance from previous prime (20772371) and next prime (20772373).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20772371) 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, 4254 + ... + 7722.

Almost surely, 2^20772372 is an apocalyptic number.

It is an amenable number.

20772372 is an abundant number, since it is smaller than the sum of its proper divisors (27807628).

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

20772372 is a wasteful number, since it uses less digits than its factorization.

20772372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975 (or 3973 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 20772372 is about 4557.6717740531. The cubic root of 20772372 is about 274.8919553521.

The spelling of 20772372 in words is "twenty million, seven hundred seventy-two thousand, three hundred seventy-two".