21359852 has 24 divisors (see below), whose sum is σ = 38608080. Its totient is φ = 10333440.

The previous prime is 21359851. The next prime is 21359861. The reversal of 21359852 is 25895312.

It is not an unprimeable number, because it can be changed into a prime (21359851) 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, 22328 + ... + 23264.

It is an arithmetic number, because the mean of its divisors is an integer number (1608670).

Almost surely, 2^21359852 is an apocalyptic number.

It is an amenable number.

21359852 is a deficient number, since it is larger than the sum of its proper divisors (17248228).

21359852 is a wasteful number, since it uses less digits than its factorization.

21359852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1119 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 21359852 is about 4621.6719918229. The cubic root of 21359852 is about 277.4593810092.

The spelling of 21359852 in words is "twenty-one million, three hundred fifty-nine thousand, eight hundred fifty-two".