22387189 has 8 divisors (see below), whose sum is σ = 25018560. Its totient is φ = 19855200.

The previous prime is 22387171. The next prime is 22387199. The reversal of 22387189 is 98178322.

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 22387189 - 2²¹ = 20290037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22387139) 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, 24369 + ... + 25270.

It is an arithmetic number, because the mean of its divisors is an integer number (3127320).

Almost surely, 2^22387189 is an apocalyptic number.

It is an amenable number.

22387189 is a deficient number, since it is larger than the sum of its proper divisors (2631371).

22387189 is a wasteful number, since it uses less digits than its factorization.

22387189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49691.

The product of its digits is 48384, while the sum is 40.

The square root of 22387189 is about 4731.5102240194. The cubic root of 22387189 is about 281.8381991867.

It can be divided in two parts, 22 and 387189, that multiplied together give a palindrome (8518158).

The spelling of 22387189 in words is "twenty-two million, three hundred eighty-seven thousand, one hundred eighty-nine".