21034488 has 32 divisors (see below), whose sum is σ = 53084160. Its totient is φ = 6945120.

The previous prime is 21034471. The next prime is 21034513. The reversal of 21034488 is 88443012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1528 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (1658880).

Almost surely, 2^21034488 is an apocalyptic number.

It is an amenable number.

21034488 is an abundant number, since it is smaller than the sum of its proper divisors (32049672).

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

21034488 is a wasteful number, since it uses less digits than its factorization.

21034488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307 (or 8303 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 21034488 is about 4586.3371005629. The cubic root of 21034488 is about 276.0433664266.

The spelling of 21034488 in words is "twenty-one million, thirty-four thousand, four hundred eighty-eight".