21875296 has 12 divisors (see below), whose sum is σ = 43067052. Its totient is φ = 10937632.

The previous prime is 21875291. The next prime is 21875303. The reversal of 21875296 is 69257812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21875291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341770 + ... + 341833.

It is an arithmetic number, because the mean of its divisors is an integer number (3588921).

Almost surely, 2^21875296 is an apocalyptic number.

It is an amenable number.

21875296 is a deficient number, since it is larger than the sum of its proper divisors (21191756).

21875296 is an equidigital number, since it uses as much as digits as its factorization.

21875296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683613 (or 683605 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 21875296 is about 4677.1033770914. The cubic root of 21875296 is about 279.6734969696.

The spelling of 21875296 in words is "twenty-one million, eight hundred seventy-five thousand, two hundred ninety-six".