21925376 has 80 divisors (see below), whose sum is σ = 50822640. Its totient is φ = 9338880.

The previous prime is 21925369. The next prime is 21925429. The reversal of 21925376 is 67352912.

It is a super-2 number, since 2×21925376² = 961444225482752, which contains 22 as substring.

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, 95630 + ... + 95858.

It is an arithmetic number, because the mean of its divisors is an integer number (635283).

Almost surely, 2^21925376 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 21925376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25411320).

21925376 is an abundant number, since it is smaller than the sum of its proper divisors (28897264).

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

21925376 is a wasteful number, since it uses less digits than its factorization.

21925376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 259 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 21925376 is about 4682.4540574361. The cubic root of 21925376 is about 279.8867569273.

The spelling of 21925376 in words is "twenty-one million, nine hundred twenty-five thousand, three hundred seventy-six".