20954320 has 40 divisors (see below), whose sum is σ = 49211136. Its totient is φ = 8297088.

The previous prime is 20954303. The next prime is 20954333. The reversal of 20954320 is 2345902.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) 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 7 ways as a sum of consecutive naturals, for example, 6969 + ... + 9511.

Almost surely, 2^20954320 is an apocalyptic number.

20954320 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 20954320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24605568).

20954320 is an abundant number, since it is smaller than the sum of its proper divisors (28256816).

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

20954320 is a wasteful number, since it uses less digits than its factorization.

20954320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20954320 is about 4577.5888849917. The cubic root of 20954320 is about 275.6922285159.

The spelling of 20954320 in words is "twenty million, nine hundred fifty-four thousand, three hundred twenty".