21849152 has 28 divisors (see below), whose sum is σ = 46693836. Its totient is φ = 10083840.

The previous prime is 21849137. The next prime is 21849161. The reversal of 21849152 is 25194812.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 20647936 = 1096^2 + 4544^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12299 + ... + 13962.

It is an arithmetic number, because the mean of its divisors is an integer number (1667637).

Almost surely, 2^21849152 is an apocalyptic number.

It is an amenable number.

21849152 is an abundant number, since it is smaller than the sum of its proper divisors (24844684).

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

21849152 is a wasteful number, since it uses less digits than its factorization.

21849152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26286 (or 26276 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 21849152 is about 4674.3076492674. The cubic root of 21849152 is about 279.5620364023.

The spelling of 21849152 in words is "twenty-one million, eight hundred forty-nine thousand, one hundred fifty-two".