22039887 has 8 divisors (see below), whose sum is σ = 29423536. Its totient is φ = 14674752.

The previous prime is 22039879. The next prime is 22039907. The reversal of 22039887 is 78893022.

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

It is not a de Polignac number, because 22039887 - 2³ = 22039879 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 (22039807) 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, 1558 + ... + 6819.

It is an arithmetic number, because the mean of its divisors is an integer number (3677942).

Almost surely, 2^22039887 is an apocalyptic number.

22039887 is a deficient number, since it is larger than the sum of its proper divisors (7383649).

22039887 is an equidigital number, since it uses as much as digits as its factorization.

22039887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 22039887 is about 4694.6658028022. The cubic root of 22039887 is about 280.3731716500.

It can be divided in two parts, 2203 and 9887, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 22039887 in words is "twenty-two million, thirty-nine thousand, eight hundred eighty-seven".