21693014 has 8 divisors (see below), whose sum is σ = 37188048. Its totient is φ = 9297000.

The previous prime is 21693013. The next prime is 21693017. The reversal of 21693014 is 41039612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21693011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774737 + ... + 774764.

It is an arithmetic number, because the mean of its divisors is an integer number (4648506).

Almost surely, 2^21693014 is an apocalyptic number.

21693014 is a deficient number, since it is larger than the sum of its proper divisors (15495034).

21693014 is a wasteful number, since it uses less digits than its factorization.

21693014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549510.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 21693014 is about 4657.5759789831. The cubic root of 21693014 is about 278.8945101208.

The spelling of 21693014 in words is "twenty-one million, six hundred ninety-three thousand, fourteen".