2022640440 has 128 divisors (see below), whose sum is σ = 6492441600. Its totient is φ = 502571520.

The previous prime is 2022640423. The next prime is 2022640453. The reversal of 2022640440 is 440462202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2022640440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131809 + ... + 146351.

It is an arithmetic number, because the mean of its divisors is an integer number (50722200).

Almost surely, 2^2022640440 is an apocalyptic number.

2022640440 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 2022640440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3246220800).

2022640440 is an abundant number, since it is smaller than the sum of its proper divisors (4469801160).

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

2022640440 is a wasteful number, since it uses less digits than its factorization.

2022640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14637 (or 14633 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2022640440 is about 44973.7750250076. The cubic root of 2022640440 is about 1264.6574168522.

The spelling of 2022640440 in words is "two billion, twenty-two million, six hundred forty thousand, four hundred forty".