2865256830 has 48 divisors (see below), whose sum is σ = 7554609504. Its totient is φ = 753305280.

The previous prime is 2865256819. The next prime is 2865256841. The reversal of 2865256830 is 386525682.

2865256830 is a `hidden beast` number, since 2 + 8 + 6 + 52 + 568 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (2865256819) and next prime (2865256841).

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217809 + ... + 230588.

It is an arithmetic number, because the mean of its divisors is an integer number (157387698).

Almost surely, 2^2865256830 is an apocalyptic number.

2865256830 is an abundant number, since it is smaller than the sum of its proper divisors (4689352674).

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

2865256830 is a wasteful number, since it uses less digits than its factorization.

2865256830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448481 (or 448478 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 2865256830 is about 53528.0938386564. The cubic root of 2865256830 is about 1420.3253949132.

The spelling of 2865256830 in words is "two billion, eight hundred sixty-five million, two hundred fifty-six thousand, eight hundred thirty".