21334748 has 6 divisors (see below), whose sum is σ = 37335816. Its totient is φ = 10667372.

The previous prime is 21334723. The next prime is 21334759. The reversal of 21334748 is 84743312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666840 + ... + 2666847.

It is an arithmetic number, because the mean of its divisors is an integer number (6222636).

Almost surely, 2^21334748 is an apocalyptic number.

It is an amenable number.

21334748 is a deficient number, since it is larger than the sum of its proper divisors (16001068).

21334748 is a wasteful number, since it uses less digits than its factorization.

21334748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333691 (or 5333689 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 21334748 is about 4618.9552931372. The cubic root of 21334748 is about 277.3506400740.

The spelling of 21334748 in words is "twenty-one million, three hundred thirty-four thousand, seven hundred forty-eight".