21348276 has 24 divisors (see below), whose sum is σ = 49969920. Its totient is φ = 7093632.

The previous prime is 21348259. The next prime is 21348281. The reversal of 21348276 is 67284312.

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, 1405 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (2082080).

Almost surely, 2^21348276 is an apocalyptic number.

It is an amenable number.

21348276 is an abundant number, since it is smaller than the sum of its proper divisors (28621644).

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

21348276 is a wasteful number, since it uses less digits than its factorization.

21348276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623 (or 5621 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 21348276 is about 4620.4194614775. The cubic root of 21348276 is about 277.4092487924.

The spelling of 21348276 in words is "twenty-one million, three hundred forty-eight thousand, two hundred seventy-six".