2278863 has 24 divisors (see below), whose sum is σ = 3500640. Its totient is φ = 1425600.

The previous prime is 2278847. The next prime is 2278877. The reversal of 2278863 is 3688722.

It is a happy number.

It is not a de Polignac number, because 2278863 - 2⁴ = 2278847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20853 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (145860).

2^2278863 is an apocalyptic number.

2278863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2278863 is a deficient number, since it is larger than the sum of its proper divisors (1221777).

2278863 is a wasteful number, since it uses less digits than its factorization.

2278863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 236 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2278863 is about 1509.5903417815. The cubic root of 2278863 is about 131.5950052458.

The spelling of 2278863 in words is "two million, two hundred seventy-eight thousand, eight hundred sixty-three".