2865015216 has 120 divisors (see below), whose sum is σ = 9191030784. Its totient is φ = 816117120.

The previous prime is 2865015193. The next prime is 2865015233. The reversal of 2865015216 is 6125105682.

2865015216 is a `hidden beast` number, since 2 + 86 + 50 + 1 + 521 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 345681 + ... + 353871.

Almost surely, 2^2865015216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2865015216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4595515392).

2865015216 is an abundant number, since it is smaller than the sum of its proper divisors (6326015568).

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

2865015216 is a wasteful number, since it uses less digits than its factorization.

2865015216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8559 (or 8550 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2865015216 is about 53525.8369014441. The cubic root of 2865015216 is about 1420.2854706101.

The spelling of 2865015216 in words is "two billion, eight hundred sixty-five million, fifteen thousand, two hundred sixteen".