2780590860 has 72 divisors (see below), whose sum is σ = 8461239696. Its totient is φ = 739136640.

The previous prime is 2780590837. The next prime is 2780590871. The reversal of 2780590860 is 680950872.

2780590860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32695 + ... + 81425.

It is an arithmetic number, because the mean of its divisors is an integer number (117517218).

Almost surely, 2^2780590860 is an apocalyptic number.

2780590860 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 2780590860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4230619848).

2780590860 is an abundant number, since it is smaller than the sum of its proper divisors (5680648836).

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

2780590860 is a wasteful number, since it uses less digits than its factorization.

2780590860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49063 (or 49058 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 2780590860 is about 52731.3081574884. The cubic root of 2780590860 is about 1406.1954778269.

The spelling of 2780590860 in words is "two billion, seven hundred eighty million, five hundred ninety thousand, eight hundred sixty".