21402614 has 8 divisors (see below), whose sum is σ = 32583288. Its totient is φ = 10541520.

The previous prime is 21402593. The next prime is 21402637. The reversal of 21402614 is 41620412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79727 + ... + 79994.

It is an arithmetic number, because the mean of its divisors is an integer number (4072911).

Almost surely, 2^21402614 is an apocalyptic number.

21402614 is a deficient number, since it is larger than the sum of its proper divisors (11180674).

21402614 is a wasteful number, since it uses less digits than its factorization.

21402614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159790.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 21402614 is about 4626.2959265486. The cubic root of 21402614 is about 277.6444136459.

The spelling of 21402614 in words is "twenty-one million, four hundred two thousand, six hundred fourteen".