21954704 has 20 divisors (see below), whose sum is σ = 42703740. Its totient is φ = 10934400.

The previous prime is 21954679. The next prime is 21954707. The reversal of 21954704 is 40745912.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 425104 + 21529600 = 652^2 + 4640^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21954707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754 + ... + 6854.

It is an arithmetic number, because the mean of its divisors is an integer number (2135187).

Almost surely, 2^21954704 is an apocalyptic number.

It is an amenable number.

21954704 is a deficient number, since it is larger than the sum of its proper divisors (20749036).

21954704 is a wasteful number, since it uses less digits than its factorization.

21954704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378 (or 5372 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 21954704 is about 4685.5847020409. The cubic root of 21954704 is about 280.0114961266.

The spelling of 21954704 in words is "twenty-one million, nine hundred fifty-four thousand, seven hundred four".