2278790 has 16 divisors (see below), whose sum is σ = 4127760. Its totient is φ = 905760.

The previous prime is 2278769. The next prime is 2278807. The reversal of 2278790 is 978722.

2278790 = 328² + 329² + ... + 347².

It is a self number, because there is not a number n which added to its sum of digits gives 2278790.

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, 1181 + ... + 2439.

It is an arithmetic number, because the mean of its divisors is an integer number (257985).

2^2278790 is an apocalyptic number.

2278790 is a deficient number, since it is larger than the sum of its proper divisors (1848970).

2278790 is a wasteful number, since it uses less digits than its factorization.

2278790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2278790 is about 1509.5661628428. The cubic root of 2278790 is about 131.5936000805.

The spelling of 2278790 in words is "two million, two hundred seventy-eight thousand, seven hundred ninety".