22037994 has 80 divisors (see below), whose sum is σ = 54885600. Its totient is φ = 6553440.

The previous prime is 22037989. The next prime is 22038011. The reversal of 22037994 is 49973022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 147832 + ... + 147980.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

Almost surely, 2^22037994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22037994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27442800).

22037994 is an abundant number, since it is smaller than the sum of its proper divisors (32847606).

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

22037994 is a wasteful number, since it uses less digits than its factorization.

22037994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 22037994 is about 4694.4641866778. The cubic root of 22037994 is about 280.3651443613.

The spelling of 22037994 in words is "twenty-two million, thirty-seven thousand, nine hundred ninety-four".