2280503640 has 128 divisors (see below), whose sum is σ = 7032614400. Its totient is φ = 591252480.

The previous prime is 2280503597. The next prime is 2280503647. The reversal of 2280503640 is 463050822.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2280503598 and 2280503607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2280503647) 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, 1864069 + ... + 1865291.

It is an arithmetic number, because the mean of its divisors is an integer number (54942300).

Almost surely, 2^2280503640 is an apocalyptic number.

2280503640 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 2280503640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3516307200).

2280503640 is an abundant number, since it is smaller than the sum of its proper divisors (4752110760).

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

2280503640 is a wasteful number, since it uses less digits than its factorization.

2280503640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2280503640 is about 47754.6190436067. The cubic root of 2280503640 is about 1316.2657775057.

The spelling of 2280503640 in words is "two billion, two hundred eighty million, five hundred three thousand, six hundred forty".