21346568 has 32 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 10320000.

The previous prime is 21346547. The next prime is 21346571. The reversal of 21346568 is 86564312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49313 + ... + 49743.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^21346568 is an apocalyptic number.

It is an amenable number.

21346568 is a deficient number, since it is larger than the sum of its proper divisors (20021752).

21346568 is a wasteful number, since it uses less digits than its factorization.

21346568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 21346568 is about 4620.2346260769. The cubic root of 21346568 is about 277.4018504177.

The spelling of 21346568 in words is "twenty-one million, three hundred forty-six thousand, five hundred sixty-eight".