2878616 has 32 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 1309440.

The previous prime is 2878613. The next prime is 2878639. The reversal of 2878616 is 6168782.

2878616 = 134² + 135² + ... + 222².

It is a self number, because there is not a number n which added to its sum of digits gives 2878616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9101 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (184275).

2^2878616 is an apocalyptic number.

2878616 is a gapful number since it is divisible by the number (26) 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 2878616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2948400).

2878616 is an abundant number, since it is smaller than the sum of its proper divisors (3018184).

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

2878616 is a wasteful number, since it uses less digits than its factorization.

2878616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 415 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 2878616 is about 1696.6484609370. The cubic root of 2878616 is about 142.2529380634.

The spelling of 2878616 in words is "two million, eight hundred seventy-eight thousand, six hundred sixteen".