22981798 has 16 divisors (see below), whose sum is σ = 40066560. Its totient is φ = 9682056.

The previous prime is 22981789. The next prime is 22981801. The reversal of 22981798 is 89718922.

It is a congruent number.

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, 13086 + ... + 14737.

It is an arithmetic number, because the mean of its divisors is an integer number (2504160).

Almost surely, 2^22981798 is an apocalyptic number.

22981798 is a deficient number, since it is larger than the sum of its proper divisors (17084762).

22981798 is a wasteful number, since it uses less digits than its factorization.

22981798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27891.

The product of its digits is 145152, while the sum is 46.

The square root of 22981798 is about 4793.9334580280. The cubic root of 22981798 is about 284.3116577997.

It can be divided in two parts, 2298 and 1798, that added together give a 12-th power (4096 = 2¹²).

The spelling of 22981798 in words is "twenty-two million, nine hundred eighty-one thousand, seven hundred ninety-eight".