2858865020 has 48 divisors (see below), whose sum is σ = 6894115200. Its totient is φ = 984870720.

The previous prime is 2858865011. The next prime is 2858865029. The reversal of 2858865020 is 205688582.

2858865020 = T₇₁ + T₇₂ + ... + T₂₅₇₈.

It is an interprime number because it is at equal distance from previous prime (2858865011) and next prime (2858865029).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2858865029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 337790 + ... + 346149.

It is an arithmetic number, because the mean of its divisors is an integer number (143627400).

Almost surely, 2^2858865020 is an apocalyptic number.

2858865020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2858865020 is an abundant number, since it is smaller than the sum of its proper divisors (4035250180).

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

2858865020 is a wasteful number, since it uses less digits than its factorization.

2858865020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683978 (or 683976 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 2858865020 is about 53468.3553141482. The cubic root of 2858865020 is about 1419.2684554356.

The spelling of 2858865020 in words is "two billion, eight hundred fifty-eight million, eight hundred sixty-five thousand, twenty".