22085478 has 24 divisors (see below), whose sum is σ = 48568728. Its totient is φ = 7251552.

The previous prime is 22085419. The next prime is 22085489. The reversal of 22085478 is 87458022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7951 + ... + 10362.

It is an arithmetic number, because the mean of its divisors is an integer number (2023697).

Almost surely, 2^22085478 is an apocalyptic number.

22085478 is an abundant number, since it is smaller than the sum of its proper divisors (26483250).

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

22085478 is a wasteful number, since it uses less digits than its factorization.

22085478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18388 (or 18385 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 22085478 is about 4699.5189115483. The cubic root of 22085478 is about 280.5663621379.

The spelling of 22085478 in words is "twenty-two million, eighty-five thousand, four hundred seventy-eight".