20772422 has 24 divisors (see below), whose sum is σ = 34710120. Its totient is φ = 9245280.

The previous prime is 20772403. The next prime is 20772443. The reversal of 20772422 is 22427702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20772391 and 20772400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201623 + ... + 201725.

It is an arithmetic number, because the mean of its divisors is an integer number (1446255).

Almost surely, 2^20772422 is an apocalyptic number.

20772422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20772422 is a deficient number, since it is larger than the sum of its proper divisors (13937698).

20772422 is a wasteful number, since it uses less digits than its factorization.

20772422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 20772422 is about 4557.6772593065. The cubic root of 20772422 is about 274.8921759109.

The spelling of 20772422 in words is "twenty million, seven hundred seventy-two thousand, four hundred twenty-two".