1878280 has 16 divisors (see below), whose sum is σ = 4226220. Its totient is φ = 751296.

The previous prime is 1878277. The next prime is 1878281. The reversal of 1878280 is 828781.

It can be written as a sum of positive squares in 2 ways, for example, as 1811716 + 66564 = 1346^2 + 258^2 .

It is not an unprimeable number, because it can be changed into a prime (1878281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23439 + ... + 23518.

2^1878280 is an apocalyptic number.

1878280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1878280 is an abundant number, since it is smaller than the sum of its proper divisors (2347940).

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

1878280 is a wasteful number, since it uses less digits than its factorization.

1878280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46968 (or 46964 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 1878280 is about 1370.5035570913. The cubic root of 1878280 is about 123.3824656125.

The spelling of 1878280 in words is "one million, eight hundred seventy-eight thousand, two hundred eighty".