21359614 has 4 divisors (see below), whose sum is σ = 32039424. Its totient is φ = 10679806.

The previous prime is 21359603. The next prime is 21359621. The reversal of 21359614 is 41695312.

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

It is a super-2 number, since 2×21359614² = 912466220457992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5339902 + ... + 5339905.

It is an arithmetic number, because the mean of its divisors is an integer number (8009856).

Almost surely, 2^21359614 is an apocalyptic number.

21359614 is a deficient number, since it is larger than the sum of its proper divisors (10679810).

21359614 is a wasteful number, since it uses less digits than its factorization.

21359614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679809.

The product of its digits is 6480, while the sum is 31.

The square root of 21359614 is about 4621.6462434938. The cubic root of 21359614 is about 277.4583504843.

The spelling of 21359614 in words is "twenty-one million, three hundred fifty-nine thousand, six hundred fourteen".