2278280 has 16 divisors (see below), whose sum is σ = 5126220. Its totient is φ = 911296.

The previous prime is 2278277. The next prime is 2278291. The reversal of 2278280 is 828722.

It can be written as a sum of positive squares in 2 ways, for example, as 2079364 + 198916 = 1442^2 + 446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28439 + ... + 28518.

2^2278280 is an apocalyptic number.

2278280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2278280 is an abundant number, since it is smaller than the sum of its proper divisors (2847940).

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

2278280 is a wasteful number, since it uses less digits than its factorization.

2278280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56968 (or 56964 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2278280 is about 1509.3972306852. The cubic root of 2278280 is about 131.5837823346.

The spelling of 2278280 in words is "two million, two hundred seventy-eight thousand, two hundred eighty".