21074092 has 24 divisors (see below), whose sum is σ = 40395600. Its totient is φ = 9560256.

The previous prime is 21074089. The next prime is 21074093. The reversal of 21074092 is 29047012.

It is not an unprimeable number, because it can be changed into a prime (21074093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367 + ... + 6502.

It is an arithmetic number, because the mean of its divisors is an integer number (1683150).

Almost surely, 2^21074092 is an apocalyptic number.

It is an amenable number.

21074092 is a deficient number, since it is larger than the sum of its proper divisors (19321508).

21074092 is a wasteful number, since it uses less digits than its factorization.

21074092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945 (or 6943 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 21074092 is about 4590.6526769077. The cubic root of 21074092 is about 276.2165037906.

The spelling of 21074092 in words is "twenty-one million, seventy-four thousand, ninety-two".