21373848 has 32 divisors (see below), whose sum is σ = 59372400. Its totient is φ = 7124544.

The previous prime is 21373843. The next prime is 21373867. The reversal of 21373848 is 84837312.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21373843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49261 + ... + 49692.

Almost surely, 2^21373848 is an apocalyptic number.

It is an amenable number.

21373848 is an abundant number, since it is smaller than the sum of its proper divisors (37998552).

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

21373848 is a wasteful number, since it uses less digits than its factorization.

21373848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98968 (or 98958 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 21373848 is about 4623.1859144966. The cubic root of 21373848 is about 277.5199693445.

The spelling of 21373848 in words is "twenty-one million, three hundred seventy-three thousand, eight hundred forty-eight".