21469016 has 16 divisors (see below), whose sum is σ = 40332840. Its totient is φ = 10713600.

The previous prime is 21469001. The next prime is 21469027. The reversal of 21469016 is 61096412.

It is a self number, because there is not a number n which added to its sum of digits gives 21469016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291 + ... + 6941.

Almost surely, 2^21469016 is an apocalyptic number.

It is an amenable number.

21469016 is a deficient number, since it is larger than the sum of its proper divisors (18863824).

21469016 is a wasteful number, since it uses less digits than its factorization.

21469016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234 (or 5230 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 21469016 is about 4633.4669525098. The cubic root of 21469016 is about 277.9312494967.

The spelling of 21469016 in words is "twenty-one million, four hundred sixty-nine thousand, sixteen".