21469324 has 12 divisors (see below), whose sum is σ = 38587024. Its totient is φ = 10444464.

The previous prime is 21469321. The next prime is 21469339. The reversal of 21469324 is 42396412.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21469321) 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 in 3 ways as a sum of consecutive naturals, for example, 72384 + ... + 72679.

Almost surely, 2^21469324 is an apocalyptic number.

It is an amenable number.

21469324 is a deficient number, since it is larger than the sum of its proper divisors (17117700).

21469324 is a wasteful number, since it uses less digits than its factorization.

21469324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145104 (or 145102 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 21469324 is about 4633.5001888421. The cubic root of 21469324 is about 277.9325785813.

The spelling of 21469324 in words is "twenty-one million, four hundred sixty-nine thousand, three hundred twenty-four".