2877978 has 16 divisors (see below), whose sum is σ = 5942016. Its totient is φ = 928320.

The previous prime is 2877943. The next prime is 2877983. The reversal of 2877978 is 8797782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7551 + ... + 7922.

It is an arithmetic number, because the mean of its divisors is an integer number (371376).

2^2877978 is an apocalyptic number.

2877978 is an abundant number, since it is smaller than the sum of its proper divisors (3064038).

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

2877978 is a wasteful number, since it uses less digits than its factorization.

2877978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15509.

The product of its digits is 395136, while the sum is 48.

The square root of 2877978 is about 1696.4604327835. The cubic root of 2877978 is about 142.2424279108.

Subtracting from 2877978 its product of digits (395136), we obtain a palindrome (2482842).

The spelling of 2877978 in words is "two million, eight hundred seventy-seven thousand, nine hundred seventy-eight".