20954720 has 96 divisors (see below), whose sum is σ = 53434080. Its totient is φ = 7741440.

The previous prime is 20954711. The next prime is 20954737. The reversal of 20954720 is 2745902.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185384 + ... + 185496.

It is an arithmetic number, because the mean of its divisors is an integer number (556605).

Almost surely, 2^20954720 is an apocalyptic number.

20954720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20954720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26717040).

20954720 is an abundant number, since it is smaller than the sum of its proper divisors (32479360).

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

20954720 is a wasteful number, since it uses less digits than its factorization.

20954720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20954720 is about 4577.6325759065. The cubic root of 20954720 is about 275.6939827474.

The spelling of 20954720 in words is "twenty million, nine hundred fifty-four thousand, seven hundred twenty".