21853482 has 32 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 6137328.

The previous prime is 21853399. The next prime is 21853487. The reversal of 21853482 is 28435812.

It is not an unprimeable number, because it can be changed into a prime (21853487) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1932 + ... + 6887.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^21853482 is an apocalyptic number.

21853482 is an abundant number, since it is smaller than the sum of its proper divisors (28949718).

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

21853482 is a wasteful number, since it uses less digits than its factorization.

21853482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890.

The product of its digits is 15360, while the sum is 33.

The square root of 21853482 is about 4674.7707965204. The cubic root of 21853482 is about 279.5805027737.

The spelling of 21853482 in words is "twenty-one million, eight hundred fifty-three thousand, four hundred eighty-two".