21933614 has 4 divisors (see below), whose sum is σ = 32900424. Its totient is φ = 10966806.

The previous prime is 21933607. The next prime is 21933623. The reversal of 21933614 is 41633912.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5483402 + ... + 5483405.

It is an arithmetic number, because the mean of its divisors is an integer number (8225106).

Almost surely, 2^21933614 is an apocalyptic number.

21933614 is a deficient number, since it is larger than the sum of its proper divisors (10966810).

21933614 is a wasteful number, since it uses less digits than its factorization.

21933614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966809.

The product of its digits is 3888, while the sum is 29.

The square root of 21933614 is about 4683.3336417556. Note that the first 3 decimals coincide. The cubic root of 21933614 is about 279.9218063968.

It can be divided in two parts, 2193361 and 4, that multiplied together give a square (8773444 = 2962²).

The spelling of 21933614 in words is "twenty-one million, nine hundred thirty-three thousand, six hundred fourteen".