1228878 has 32 divisors (see below), whose sum is σ = 3121920. Its totient is φ = 351000.

The previous prime is 1228861. The next prime is 1228883. The reversal of 1228878 is 8788221.

It is a super-2 number, since 2×1228878² = 3020282277768, which contains 22 as substring.

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, 1248 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (97560).

2^1228878 is an apocalyptic number.

1228878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1228878 is an abundant number, since it is smaller than the sum of its proper divisors (1893042).

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

1228878 is a wasteful number, since it uses less digits than its factorization.

1228878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269 (or 3263 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 1228878 is about 1108.5476985678. The cubic root of 1228878 is about 107.1115382747. Note that the first 3 decimals are identical.

The spelling of 1228878 in words is "one million, two hundred twenty-eight thousand, eight hundred seventy-eight".