21237094 has 16 divisors (see below), whose sum is σ = 32472576. Its totient is φ = 10414600.

The previous prime is 21237071. The next prime is 21237113. The reversal of 21237094 is 49073212.

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, 49059 + ... + 49489.

It is an arithmetic number, because the mean of its divisors is an integer number (2029536).

Almost surely, 2^21237094 is an apocalyptic number.

21237094 is a deficient number, since it is larger than the sum of its proper divisors (11235482).

21237094 is a wasteful number, since it uses less digits than its factorization.

21237094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 21237094 is about 4608.3721637906. The cubic root of 21237094 is about 276.9268271058.

The spelling of 21237094 in words is "twenty-one million, two hundred thirty-seven thousand, ninety-four".