2878505 has 24 divisors (see below), whose sum is σ = 4158720. Its totient is φ = 1905120.

The previous prime is 2878451. The next prime is 2878537. The reversal of 2878505 is 5058782.

It is not a de Polignac number, because 2878505 - 2¹² = 2874409 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a d-powerful number, because it can be written as 2⁵ + 8² + 7 + 8⁷ + 5⁸ + 0 + 5⁸ .

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, 7406 + ... + 7784.

It is an arithmetic number, because the mean of its divisors is an integer number (173280).

2^2878505 is an apocalyptic number.

It is an amenable number.

2878505 is a deficient number, since it is larger than the sum of its proper divisors (1280215).

2878505 is a wasteful number, since it uses less digits than its factorization.

2878505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2878505 is about 1696.6157490723. The cubic root of 2878505 is about 142.2511096062.

The spelling of 2878505 in words is "two million, eight hundred seventy-eight thousand, five hundred five".