21850952 has 16 divisors (see below), whose sum is σ = 41271660. Its totient is φ = 10845184.

The previous prime is 21850919. The next prime is 21850957. The reversal of 21850952 is 25905812.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 376996 = 4634^2 + 614^2 .

It is not an unprimeable number, because it can be changed into a prime (21850957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8873 + ... + 11064.

Almost surely, 2^21850952 is an apocalyptic number.

It is an amenable number.

21850952 is a deficient number, since it is larger than the sum of its proper divisors (19420708).

21850952 is a wasteful number, since it uses less digits than its factorization.

21850952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20080 (or 20076 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 21850952 is about 4674.5001871858. The cubic root of 21850952 is about 279.5697132502.

The spelling of 21850952 in words is "twenty-one million, eight hundred fifty thousand, nine hundred fifty-two".