21938062 has 8 divisors (see below), whose sum is σ = 33303816. Its totient is φ = 10836792.

The previous prime is 21938057. The next prime is 21938083. The reversal of 21938062 is 26083912.

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, 65913 + ... + 66244.

It is an arithmetic number, because the mean of its divisors is an integer number (4162977).

Almost surely, 2^21938062 is an apocalyptic number.

21938062 is a deficient number, since it is larger than the sum of its proper divisors (11365754).

21938062 is a wasteful number, since it uses less digits than its factorization.

21938062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132242.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 21938062 is about 4683.8084930962. The cubic root of 21938062 is about 279.9407272495.

The spelling of 21938062 in words is "twenty-one million, nine hundred thirty-eight thousand, sixty-two".