21883042 has 8 divisors (see below), whose sum is σ = 32889132. Its totient is φ = 10920000.

The previous prime is 21883039. The next prime is 21883049. The reversal of 21883042 is 24038812.

It can be written as a sum of positive squares in 2 ways, for example, as 20421361 + 1461681 = 4519^2 + 1209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21883042.

It is not an unprimeable number, because it can be changed into a prime (21883049) 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, 9459 + ... + 11542.

Almost surely, 2^21883042 is an apocalyptic number.

21883042 is a deficient number, since it is larger than the sum of its proper divisors (11006090).

21883042 is a wasteful number, since it uses less digits than its factorization.

21883042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21524.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 21883042 is about 4677.9313804287. The cubic root of 21883042 is about 279.7065036888.

The spelling of 21883042 in words is "twenty-one million, eight hundred eighty-three thousand, forty-two".