22398500 has 24 divisors (see below), whose sum is σ = 48919416. Its totient is φ = 8959200.

The previous prime is 22398479. The next prime is 22398533. The reversal of 22398500 is 589322.

It can be written as a sum of positive squares in 4 ways, for example, as 2184484 + 20214016 = 1478^2 + 4496^2 .

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 7 ways as a sum of consecutive naturals, for example, 21899 + ... + 22898.

It is an arithmetic number, because the mean of its divisors is an integer number (2038309).

Almost surely, 2^22398500 is an apocalyptic number.

22398500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22398500 is an abundant number, since it is smaller than the sum of its proper divisors (26520916).

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

22398500 is a wasteful number, since it uses less digits than its factorization.

22398500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44816 (or 44804 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22398500 is about 4732.7053574039. The cubic root of 22398500 is about 281.8856569111.

The spelling of 22398500 in words is "twenty-two million, three hundred ninety-eight thousand, five hundred".