20722324 has 24 divisors (see below), whose sum is σ = 41731200. Its totient is φ = 8819616.

The previous prime is 20722319. The next prime is 20722349. The reversal of 20722324 is 42322702.

It is a junction number, because it is equal to n+sod(n) for n = 20722295 and 20722304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1689 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 2^20722324 is an apocalyptic number.

It is an amenable number.

20722324 is an abundant number, since it is smaller than the sum of its proper divisors (21008876).

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

20722324 is a wasteful number, since it uses less digits than its factorization.

20722324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127 (or 5125 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20722324 is about 4552.1779402831. The cubic root of 20722324 is about 274.6710071213.

The spelling of 20722324 in words is "twenty million, seven hundred twenty-two thousand, three hundred twenty-four".