22240180 has 24 divisors (see below), whose sum is σ = 47347272. Its totient is φ = 8773632.

The previous prime is 22240147. The next prime is 22240201. The reversal of 22240180 is 8104222.

It can be written as a sum of positive squares in 4 ways, for example, as 599076 + 21641104 = 774^2 + 4652^2 .

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, 6157 + ... + 9076.

It is an arithmetic number, because the mean of its divisors is an integer number (1972803).

Almost surely, 2^22240180 is an apocalyptic number.

22240180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22240180 is an abundant number, since it is smaller than the sum of its proper divisors (25107092).

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

22240180 is a wasteful number, since it uses less digits than its factorization.

22240180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15315 (or 15313 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 22240180 is about 4715.9495332329. The cubic root of 22240180 is about 281.2199322589.

The spelling of 22240180 in words is "twenty-two million, two hundred forty thousand, one hundred eighty".