21434496 has 32 divisors (see below), whose sum is σ = 56936400. Its totient is φ = 7144704.

The previous prime is 21434471. The next prime is 21434531. The reversal of 21434496 is 69443412.

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

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27526 + ... + 28293.

Almost surely, 2^21434496 is an apocalyptic number.

It is an amenable number.

21434496 is an abundant number, since it is smaller than the sum of its proper divisors (35501904).

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

21434496 is an equidigital number, since it uses as much as digits as its factorization.

21434496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55836 (or 55824 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 21434496 is about 4629.7403814901. The cubic root of 21434496 is about 277.7822078345.

The spelling of 21434496 in words is "twenty-one million, four hundred thirty-four thousand, four hundred ninety-six".