20722048 has 64 divisors (see below), whose sum is σ = 44614800. Its totient is φ = 9551872.

The previous prime is 20722007. The next prime is 20722073. The reversal of 20722048 is 84022702.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 193611 + ... + 193717.

Almost surely, 2^20722048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20722048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22307400).

20722048 is an abundant number, since it is smaller than the sum of its proper divisors (23892752).

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

20722048 is a wasteful number, since it uses less digits than its factorization.

20722048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 20722048 is about 4552.1476250227. The cubic root of 20722048 is about 274.6697876710.

The spelling of 20722048 in words is "twenty million, seven hundred twenty-two thousand, forty-eight".