21892950 has 48 divisors (see below), whose sum is σ = 60330960. Its totient is φ = 5837760.

The previous prime is 21892939. The next prime is 21892963. The reversal of 21892950 is 5929812.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6759 + ... + 9458.

It is an arithmetic number, because the mean of its divisors is an integer number (1256895).

Almost surely, 2^21892950 is an apocalyptic number.

21892950 is an abundant number, since it is smaller than the sum of its proper divisors (38438010).

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

21892950 is a wasteful number, since it uses less digits than its factorization.

21892950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16238 (or 16227 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 21892950 is about 4678.9902756898. The cubic root of 21892950 is about 279.7487116214.

The spelling of 21892950 in words is "twenty-one million, eight hundred ninety-two thousand, nine hundred fifty".