22175440 has 60 divisors (see below), whose sum is σ = 59986116. Its totient is φ = 7601664.

The previous prime is 22175437. The next prime is 22175471. The reversal of 22175440 is 4457122.

It can be written as a sum of positive squares in 2 ways, for example, as 4769856 + 17405584 = 2184^2 + 4172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1092 + ... + 6748.

Almost surely, 2^22175440 is an apocalyptic number.

22175440 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 22175440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29993058).

22175440 is an abundant number, since it is smaller than the sum of its proper divisors (37810676).

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

22175440 is a wasteful number, since it uses less digits than its factorization.

22175440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684 (or 5671 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 22175440 is about 4709.0805896693. The cubic root of 22175440 is about 280.9467948895.

The spelling of 22175440 in words is "twenty-two million, one hundred seventy-five thousand, four hundred forty".