2278887 has 16 divisors (see below), whose sum is σ = 3322368. Its totient is φ = 1380960.

The previous prime is 2278877. The next prime is 2278891. The reversal of 2278887 is 7888722.

It is not a de Polignac number, because 2278887 - 2⁶ = 2278823 is a prime.

2278887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2358 + ... + 3180.

It is an arithmetic number, because the mean of its divisors is an integer number (207648).

2^2278887 is an apocalyptic number.

2278887 is a deficient number, since it is larger than the sum of its proper divisors (1043481).

2278887 is a wasteful number, since it uses less digits than its factorization.

2278887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its digits is 100352, while the sum is 42.

The square root of 2278887 is about 1509.5982909370. The cubic root of 2278887 is about 131.5954672114.

The spelling of 2278887 in words is "two million, two hundred seventy-eight thousand, eight hundred eighty-seven".