21282092 has 12 divisors (see below), whose sum is σ = 40108656. Its totient is φ = 9822480.

The previous prime is 21282083. The next prime is 21282103. The reversal of 21282092 is 29028212.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204584 + ... + 204687.

It is an arithmetic number, because the mean of its divisors is an integer number (3342388).

Almost surely, 2^21282092 is an apocalyptic number.

It is an amenable number.

21282092 is a deficient number, since it is larger than the sum of its proper divisors (18826564).

21282092 is a wasteful number, since it uses less digits than its factorization.

21282092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409288 (or 409286 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 21282092 is about 4613.2517815528. The cubic root of 21282092 is about 277.1222769893.

The spelling of 21282092 in words is "twenty-one million, two hundred eighty-two thousand, ninety-two".