21373614 has 24 divisors (see below), whose sum is σ = 46394712. Its totient is φ = 7111440.

The previous prime is 21373591. The next prime is 21373657. The reversal of 21373614 is 41637312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17797 + ... + 18959.

It is an arithmetic number, because the mean of its divisors is an integer number (1933113).

Almost surely, 2^21373614 is an apocalyptic number.

21373614 is an abundant number, since it is smaller than the sum of its proper divisors (25021098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21373614 is a wasteful number, since it uses less digits than its factorization.

21373614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192 (or 2189 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 21373614 is about 4623.1606072037. The cubic root of 21373614 is about 277.5189565818.

The spelling of 21373614 in words is "twenty-one million, three hundred seventy-three thousand, six hundred fourteen".