2878245 has 24 divisors (see below), whose sum is σ = 5031936. Its totient is φ = 1521888.

The previous prime is 2878231. The next prime is 2878247. The reversal of 2878245 is 5428782.

It is a happy number.

It is not a de Polignac number, because 2878245 - 2⁴ = 2878229 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878247) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7324 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (209664).

2^2878245 is an apocalyptic number.

It is an amenable number.

2878245 is a deficient number, since it is larger than the sum of its proper divisors (2153691).

2878245 is a wasteful number, since it uses less digits than its factorization.

2878245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 558 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 2878245 is about 1696.5391242173. The cubic root of 2878245 is about 142.2468265493.

The spelling of 2878245 in words is "two million, eight hundred seventy-eight thousand, two hundred forty-five".