20722662 has 16 divisors (see below), whose sum is σ = 46050480. Its totient is φ = 6907536.

The previous prime is 20722661. The next prime is 20722687. The reversal of 20722662 is 26622702.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20722661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191823 + ... + 191930.

It is an arithmetic number, because the mean of its divisors is an integer number (2878155).

Almost surely, 2^20722662 is an apocalyptic number.

20722662 is an abundant number, since it is smaller than the sum of its proper divisors (25327818).

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

20722662 is a wasteful number, since it uses less digits than its factorization.

20722662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383764 (or 383758 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20722662 is about 4552.2150652183. The cubic root of 20722662 is about 274.6725004914.

The spelling of 20722662 in words is "twenty million, seven hundred twenty-two thousand, six hundred sixty-two".