22187039 has 8 divisors (see below), whose sum is σ = 25426560. Its totient is φ = 18965016.

The previous prime is 22187029. The next prime is 22187047. The reversal of 22187039 is 93078122.

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

It is not a de Polignac number, because 22187039 - 2⁸ = 22186783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22186996 and 22187014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22187029) 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, 1529 + ... + 6834.

It is an arithmetic number, because the mean of its divisors is an integer number (3178320).

Almost surely, 2^22187039 is an apocalyptic number.

22187039 is a deficient number, since it is larger than the sum of its proper divisors (3239521).

22187039 is an equidigital number, since it uses as much as digits as its factorization.

22187039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8749.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 22187039 is about 4710.3119854209. The cubic root of 22187039 is about 280.9957700000.

The spelling of 22187039 in words is "twenty-two million, one hundred eighty-seven thousand, thirty-nine".