2296521640 has 128 divisors (see below), whose sum is σ = 6361344000. Its totient is φ = 728517888.

The previous prime is 2296521637. The next prime is 2296521649. The reversal of 2296521640 is 461256922.

It is a self number, because there is not a number n which added to its sum of digits gives 2296521640.

It is not an unprimeable number, because it can be changed into a prime (2296521649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223741 + ... + 233779.

It is an arithmetic number, because the mean of its divisors is an integer number (49698000).

Almost surely, 2^2296521640 is an apocalyptic number.

2296521640 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 2296521640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3180672000).

2296521640 is an abundant number, since it is smaller than the sum of its proper divisors (4064822360).

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

2296521640 is a wasteful number, since it uses less digits than its factorization.

2296521640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10119 (or 10115 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2296521640 is about 47922.0371019430. The cubic root of 2296521640 is about 1319.3403575872.

The spelling of 2296521640 in words is "two billion, two hundred ninety-six million, five hundred twenty-one thousand, six hundred forty".