2268316440 has 128 divisors (see below), whose sum is σ = 8142724800. Its totient is φ = 558351360.

The previous prime is 2268316381. The next prime is 2268316441. The reversal of 2268316440 is 446138622.

2268316440 is a `hidden beast` number, since 2 + 2 + 6 + 8 + 3 + 1 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2268316395 and 2268316404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2268316441) 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, 66741 + ... + 94820.

Almost surely, 2^2268316440 is an apocalyptic number.

2268316440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2268316440 is an abundant number, since it is smaller than the sum of its proper divisors (5874408360).

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

2268316440 is a wasteful number, since it uses less digits than its factorization.

2268316440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161594 (or 161584 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 2268316440 is about 47626.8457910032. The cubic root of 2268316440 is about 1313.9168438442.

The spelling of 2268316440 in words is "two billion, two hundred sixty-eight million, three hundred sixteen thousand, four hundred forty".