21463792 has 40 divisors (see below), whose sum is σ = 50327136. Its totient is φ = 8656896.

The previous prime is 21463777. The next prime is 21463801. The reversal of 21463792 is 29736412.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3733 + ... + 7540.

Almost surely, 2^21463792 is an apocalyptic number.

It is an amenable number.

21463792 is an abundant number, since it is smaller than the sum of its proper divisors (28863344).

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

21463792 is a wasteful number, since it uses less digits than its factorization.

21463792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11305 (or 11299 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 21463792 is about 4632.9031934630. The cubic root of 21463792 is about 277.9087049046.

The spelling of 21463792 in words is "twenty-one million, four hundred sixty-three thousand, seven hundred ninety-two".