2265040720 has 20 divisors (see below), whose sum is σ = 5266219860. Its totient is φ = 906016256.

The previous prime is 2265040717. The next prime is 2265040721. The reversal of 2265040720 is 270405622.

It can be written as a sum of positive squares in 2 ways, for example, as 1776453904 + 488586816 = 42148^2 + 22104^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265040721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14156425 + ... + 14156584.

It is an arithmetic number, because the mean of its divisors is an integer number (263310993).

Almost surely, 2^2265040720 is an apocalyptic number.

2265040720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2265040720 is an abundant number, since it is smaller than the sum of its proper divisors (3001179140).

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

2265040720 is a wasteful number, since it uses less digits than its factorization.

2265040720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28313022 (or 28313016 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2265040720 is about 47592.4439380875. The cubic root of 2265040720 is about 1313.2840548274.

The spelling of 2265040720 in words is "two billion, two hundred sixty-five million, forty thousand, seven hundred twenty".