21094074 has 32 divisors (see below), whose sum is σ = 48391680. Its totient is φ = 6804000.

The previous prime is 21094069. The next prime is 21094081. The reversal of 21094074 is 47049012.

It is a happy number.

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

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, 4627 + ... + 7974.

It is an arithmetic number, because the mean of its divisors is an integer number (1512240).

Almost surely, 2^21094074 is an apocalyptic number.

21094074 is an abundant number, since it is smaller than the sum of its proper divisors (27297606).

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

21094074 is a wasteful number, since it uses less digits than its factorization.

21094074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643 (or 12637 counting only the distinct ones).

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

The square root of 21094074 is about 4592.8285402353. The cubic root of 21094074 is about 276.3037770589.

The spelling of 21094074 in words is "twenty-one million, ninety-four thousand, seventy-four".