2865516 has 24 divisors (see below), whose sum is σ = 6902784. Its totient is φ = 924240.

The previous prime is 2865509. The next prime is 2865521. The reversal of 2865516 is 6155682.

It is a super-2 number, since 2×2865516² = 16422363892512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (287616).

2^2865516 is an apocalyptic number.

It is an amenable number.

2865516 is an abundant number, since it is smaller than the sum of its proper divisors (4037268).

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

2865516 is a wasteful number, since it uses less digits than its factorization.

2865516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741 (or 7739 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 2865516 is about 1692.7835065359. The cubic root of 2865516 is about 142.0368217675.

It can be divided in two parts, 2865 and 516, that multiplied together give a triangular number (1478340 = T₁₇₁₉).

The spelling of 2865516 in words is "two million, eight hundred sixty-five thousand, five hundred sixteen".