21074094 has 20 divisors (see below), whose sum is σ = 47221944. Its totient is φ = 7024644.

The previous prime is 21074093. The next prime is 21074099. The reversal of 21074094 is 49047012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 64882 + ... + 65205.

Almost surely, 2^21074094 is an apocalyptic number.

21074094 is an abundant number, since it is smaller than the sum of its proper divisors (26147850).

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

21074094 is a wasteful number, since it uses less digits than its factorization.

21074094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130101 (or 130092 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 21074094 is about 4590.6528947417. The cubic root of 21074094 is about 276.2165125286.

The spelling of 21074094 in words is "twenty-one million, seventy-four thousand, ninety-four".