21884348 has 18 divisors (see below), whose sum is σ = 38740968. Its totient is φ = 10816560.

The previous prime is 21884347. The next prime is 21884351. The reversal of 21884348 is 84348812.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21884347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120818 + ... + 120998.

It is an arithmetic number, because the mean of its divisors is an integer number (2152276).

Almost surely, 2^21884348 is an apocalyptic number.

It is an amenable number.

21884348 is a deficient number, since it is larger than the sum of its proper divisors (16856620).

21884348 is a wasteful number, since it uses less digits than its factorization.

21884348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 350 counting only the distinct ones).

The product of its digits is 49152, while the sum is 38.

The square root of 21884348 is about 4678.0709699619. The cubic root of 21884348 is about 279.7120679583.

The spelling of 21884348 in words is "twenty-one million, eight hundred eighty-four thousand, three hundred forty-eight".