22039890 has 16 divisors (see below), whose sum is σ = 52895808. Its totient is φ = 5877296.

The previous prime is 22039879. The next prime is 22039907. The reversal of 22039890 is 9893022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367302 + ... + 367361.

It is an arithmetic number, because the mean of its divisors is an integer number (3305988).

Almost surely, 2^22039890 is an apocalyptic number.

22039890 is an abundant number, since it is smaller than the sum of its proper divisors (30855918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22039890 is a wasteful number, since it uses less digits than its factorization.

22039890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734673.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 22039890 is about 4694.6661223137. Note that the first 3 decimals coincide. The cubic root of 22039890 is about 280.3731843712.

The spelling of 22039890 in words is "twenty-two million, thirty-nine thousand, eight hundred ninety".