2236305440 has 48 divisors (see below), whose sum is σ = 5286676248. Its totient is φ = 893945856.

The previous prime is 2236305439. The next prime is 2236305451. The reversal of 2236305440 is 445036322.

It can be written as a sum of positive squares in 4 ways, for example, as 2183132176 + 53173264 = 46724^2 + 7292^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315374 + ... + 322386.

Almost surely, 2^2236305440 is an apocalyptic number.

2236305440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2236305440 is an abundant number, since it is smaller than the sum of its proper divisors (3050370808).

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

2236305440 is a wasteful number, since it uses less digits than its factorization.

2236305440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021 (or 9013 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 2236305440 is about 47289.5912437399. The cubic root of 2236305440 is about 1307.7067740108.

The spelling of 2236305440 in words is "two billion, two hundred thirty-six million, three hundred five thousand, four hundred forty".