2278626 has 32 divisors (see below), whose sum is σ = 5253120. Its totient is φ = 645456.

The previous prime is 2278553. The next prime is 2278631. The reversal of 2278626 is 6268722.

2278626 is nontrivially palindromic in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9415 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^2278626 is an apocalyptic number.

2278626 is an abundant number, since it is smaller than the sum of its proper divisors (2974494).

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

2278626 is a wasteful number, since it uses less digits than its factorization.

2278626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 16128, while the sum is 33.

The square root of 2278626 is about 1509.5118416230. The cubic root of 2278626 is about 131.5904431612.

The spelling of 2278626 in words is "two million, two hundred seventy-eight thousand, six hundred twenty-six".