2259764640 has 576 divisors, whose sum is σ = 9285808896. Its totient is φ = 489701376.

The previous prime is 2259764629. The next prime is 2259764693. The reversal of 2259764640 is 464679522.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27226039 + ... + 27226121.

It is an arithmetic number, because the mean of its divisors is an integer number (16121196).

Almost surely, 2^2259764640 is an apocalyptic number.

2259764640 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 2259764640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4642904448).

2259764640 is an abundant number, since it is smaller than the sum of its proper divisors (7026044256).

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

2259764640 is a wasteful number, since it uses less digits than its factorization.

2259764640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 2259764640 is about 47536.9818141623. The cubic root of 2259764640 is about 1312.2635612191.

The spelling of 2259764640 in words is "two billion, two hundred fifty-nine million, seven hundred sixty-four thousand, six hundred forty".