2278612 has 24 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 918912.

The previous prime is 2278553. The next prime is 2278631. The reversal of 2278612 is 2168722.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 1918 + ... + 2869.

It is an arithmetic number, because the mean of its divisors is an integer number (201096).

2^2278612 is an apocalyptic number.

It is an amenable number.

2278612 is an abundant number, since it is smaller than the sum of its proper divisors (2547692).

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

2278612 is a wasteful number, since it uses less digits than its factorization.

2278612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815 (or 4813 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 2278612 is about 1509.5072043551. The cubic root of 2278612 is about 131.5901736611.

The spelling of 2278612 in words is "two million, two hundred seventy-eight thousand, six hundred twelve".