21937094 has 8 divisors (see below), whose sum is σ = 32954688. Its totient is φ = 10952200.

The previous prime is 21937087. The next prime is 21937117. The reversal of 21937094 is 49073912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 6422 + ... + 9225.

It is an arithmetic number, because the mean of its divisors is an integer number (4119336).

Almost surely, 2^21937094 is an apocalyptic number.

21937094 is a deficient number, since it is larger than the sum of its proper divisors (11017594).

21937094 is a wasteful number, since it uses less digits than its factorization.

21937094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16350.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 21937094 is about 4683.7051572446. The cubic root of 21937094 is about 279.9366097996.

The spelling of 21937094 in words is "twenty-one million, nine hundred thirty-seven thousand, ninety-four".