22887021 has 8 divisors (see below), whose sum is σ = 31500544. Its totient is φ = 14765760.

The previous prime is 22887019. The next prime is 22887041. The reversal of 22887021 is 12078822.

It is a happy number.

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

It is not a de Polignac number, because 22887021 - 2¹ = 22887019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22887021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22887041) 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, 122956 + ... + 123141.

It is an arithmetic number, because the mean of its divisors is an integer number (3937568).

Almost surely, 2^22887021 is an apocalyptic number.

It is an amenable number.

22887021 is a deficient number, since it is larger than the sum of its proper divisors (8613523).

22887021 is a wasteful number, since it uses less digits than its factorization.

22887021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246131.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 22887021 is about 4784.0381478412. The cubic root of 22887021 is about 283.9202852713.

The spelling of 22887021 in words is "twenty-two million, eight hundred eighty-seven thousand, twenty-one".