22887989 has 8 divisors (see below), whose sum is σ = 24924000. Its totient is φ = 20935152.

The previous prime is 22887979. The next prime is 22888003. The reversal of 22887989 is 98978822.

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

It is a cyclic number.

It is not a de Polignac number, because 22887989 - 2⁴ = 22887973 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 22887989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22887979) 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, 20219 + ... + 21320.

It is an arithmetic number, because the mean of its divisors is an integer number (3115500).

Almost surely, 2^22887989 is an apocalyptic number.

22887989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22887989 is a deficient number, since it is larger than the sum of its proper divisors (2036011).

22887989 is a wasteful number, since it uses less digits than its factorization.

22887989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41587.

The product of its digits is 1161216, while the sum is 53.

The square root of 22887989 is about 4784.1393165333. The cubic root of 22887989 is about 283.9242879906.

The spelling of 22887989 in words is "twenty-two million, eight hundred eighty-seven thousand, nine hundred eighty-nine".