22798540 has 24 divisors (see below), whose sum is σ = 47975760. Its totient is φ = 9100608.

The previous prime is 22798487. The next prime is 22798571. The reversal of 22798540 is 4589722.

It is a super-2 number, since 2×22798540² = 1039546852263200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22798540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12826 + ... + 14494.

It is an arithmetic number, because the mean of its divisors is an integer number (1998990).

Almost surely, 2^22798540 is an apocalyptic number.

22798540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22798540 is an abundant number, since it is smaller than the sum of its proper divisors (25177220).

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

22798540 is a wasteful number, since it uses less digits than its factorization.

22798540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 22798540 is about 4774.7816704013. The cubic root of 22798540 is about 283.5539350781.

The spelling of 22798540 in words is "twenty-two million, seven hundred ninety-eight thousand, five hundred forty".