21214092 has 48 divisors (see below), whose sum is σ = 51128672. Its totient is φ = 6842880.

The previous prime is 21214087. The next prime is 21214111. The reversal of 21214092 is 29041212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53238 + ... + 53634.

Almost surely, 2^21214092 is an apocalyptic number.

It is an amenable number.

21214092 is an abundant number, since it is smaller than the sum of its proper divisors (29914580).

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

21214092 is a wasteful number, since it uses less digits than its factorization.

21214092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 21214092 is about 4605.8758124813. The cubic root of 21214092 is about 276.8268107223.

The spelling of 21214092 in words is "twenty-one million, two hundred fourteen thousand, ninety-two".