20722674 has 16 divisors (see below), whose sum is σ = 47366208. Its totient is φ = 5920752.

The previous prime is 20722661. The next prime is 20722687. The reversal of 20722674 is 47622702.

It is an interprime number because it is at equal distance from previous prime (20722661) and next prime (20722687).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246657 + ... + 246740.

It is an arithmetic number, because the mean of its divisors is an integer number (2960388).

Almost surely, 2^20722674 is an apocalyptic number.

20722674 is an abundant number, since it is smaller than the sum of its proper divisors (26643534).

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

20722674 is a wasteful number, since it uses less digits than its factorization.

20722674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493409.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20722674 is about 4552.2163832577. The cubic root of 20722674 is about 274.6725535102.

The spelling of 20722674 in words is "twenty million, seven hundred twenty-two thousand, six hundred seventy-four".