21483392 has 32 divisors (see below), whose sum is σ = 48915120. Its totient is φ = 9206784.

The previous prime is 21483373. The next prime is 21483419. The reversal of 21483392 is 29338412.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×21483392² = 923072263651328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11093 + ... + 12884.

Almost surely, 2^21483392 is an apocalyptic number.

It is an amenable number.

21483392 is an abundant number, since it is smaller than the sum of its proper divisors (27431728).

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

21483392 is an equidigital number, since it uses as much as digits as its factorization.

21483392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23998 (or 23986 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 21483392 is about 4635.0180150675. The cubic root of 21483392 is about 277.9932714069.

The spelling of 21483392 in words is "twenty-one million, four hundred eighty-three thousand, three hundred ninety-two".