21693314 has 4 divisors (see below), whose sum is σ = 32539974. Its totient is φ = 10846656.

The previous prime is 21693311. The next prime is 21693317. The reversal of 21693314 is 41339612.

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

It is an interprime number because it is at equal distance from previous prime (21693311) and next prime (21693317).

It can be written as a sum of positive squares in only one way, i.e., 12482089 + 9211225 = 3533^2 + 3035^2 .

It is not an unprimeable number, because it can be changed into a prime (21693311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5423327 + ... + 5423330.

Almost surely, 2^21693314 is an apocalyptic number.

21693314 is a deficient number, since it is larger than the sum of its proper divisors (10846660).

21693314 is a wasteful number, since it uses less digits than its factorization.

21693314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10846659.

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

The square root of 21693314 is about 4657.6081844655. The cubic root of 21693314 is about 278.8957957569.

The spelling of 21693314 in words is "twenty-one million, six hundred ninety-three thousand, three hundred fourteen".