21282294 has 16 divisors (see below), whose sum is σ = 46434240. Its totient is φ = 6449160.

The previous prime is 21282269. The next prime is 21282301. The reversal of 21282294 is 49228212.

It is a congruent number.

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, 161164 + ... + 161295.

It is an arithmetic number, because the mean of its divisors is an integer number (2902140).

Almost surely, 2^21282294 is an apocalyptic number.

21282294 is an abundant number, since it is smaller than the sum of its proper divisors (25151946).

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

21282294 is a wasteful number, since it uses less digits than its factorization.

21282294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322475.

The product of its digits is 4608, while the sum is 30.

The square root of 21282294 is about 4613.2736749514. The cubic root of 21282294 is about 277.1231537597.

The spelling of 21282294 in words is "twenty-one million, two hundred eighty-two thousand, two hundred ninety-four".