22359240 has 160 divisors (see below), whose sum is σ = 77014080. Its totient is φ = 5816448.

The previous prime is 22359221. The next prime is 22359251. The reversal of 22359240 is 4295322.

It is a super-2 number, since 2×22359240² = 999871226755200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 217029 + ... + 217131.

It is an arithmetic number, because the mean of its divisors is an integer number (481338).

Almost surely, 2^22359240 is an apocalyptic number.

22359240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22359240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38507040).

22359240 is an abundant number, since it is smaller than the sum of its proper divisors (54654840).

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

22359240 is a wasteful number, since it uses less digits than its factorization.

22359240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 22359240 is about 4728.5558048943. Note that the first 3 decimals coincide. The cubic root of 22359240 is about 281.7208645789.

The spelling of 22359240 in words is "twenty-two million, three hundred fifty-nine thousand, two hundred forty".