22495140 has 72 divisors (see below), whose sum is σ = 69713280. Its totient is φ = 5868864.

The previous prime is 22495139. The next prime is 22495163. The reversal of 22495140 is 4159422.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7131 + ... + 9789.

It is an arithmetic number, because the mean of its divisors is an integer number (968240).

Almost surely, 2^22495140 is an apocalyptic number.

22495140 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 22495140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34856640).

22495140 is an abundant number, since it is smaller than the sum of its proper divisors (47218140).

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

22495140 is a wasteful number, since it uses less digits than its factorization.

22495140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721 (or 2716 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 22495140 is about 4742.9041736050. The cubic root of 22495140 is about 282.2904808224.

The spelling of 22495140 in words is "twenty-two million, four hundred ninety-five thousand, one hundred forty".