21214896 has 40 divisors (see below), whose sum is σ = 55186944. Its totient is φ = 7022400.

The previous prime is 21214889. The next prime is 21214903. The reversal of 21214896 is 69841212.

It is an interprime number because it is at equal distance from previous prime (21214889) and next prime (21214903).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5785 + ... + 8711.

Almost surely, 2^21214896 is an apocalyptic number.

It is an amenable number.

21214896 is an abundant number, since it is smaller than the sum of its proper divisors (33972048).

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

21214896 is a wasteful number, since it uses less digits than its factorization.

21214896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089 (or 3083 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 21214896 is about 4605.9630914717. The cubic root of 21214896 is about 276.8303078623.

The spelling of 21214896 in words is "twenty-one million, two hundred fourteen thousand, eight hundred ninety-six".