21337048 has 8 divisors (see below), whose sum is σ = 40006980. Its totient is φ = 10668520.

The previous prime is 21337037. The next prime is 21337061. The reversal of 21337048 is 84073312.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 1333558 + ... + 1333573.

Almost surely, 2^21337048 is an apocalyptic number.

It is an amenable number.

21337048 is a deficient number, since it is larger than the sum of its proper divisors (18669932).

21337048 is a wasteful number, since it uses less digits than its factorization.

21337048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667137 (or 2667133 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 21337048 is about 4619.2042604760. The cubic root of 21337048 is about 277.3606063436.

The spelling of 21337048 in words is "twenty-one million, three hundred thirty-seven thousand, forty-eight".