1228812 has 24 divisors (see below), whose sum is σ = 3088176. Its totient is φ = 378048.

The previous prime is 1228789. The next prime is 1228837. The reversal of 1228812 is 2188221.

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, 3783 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (128674).

2^1228812 is an apocalyptic number.

1228812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228812 is an abundant number, since it is smaller than the sum of its proper divisors (1859364).

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

1228812 is a wasteful number, since it uses less digits than its factorization.

1228812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897 (or 7895 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 1228812 is about 1108.5179294896. The cubic root of 1228812 is about 107.1096206750.

It can be divided in two parts, 12288 and 12, that multiplied together give a square (147456 = 384²).

The spelling of 1228812 in words is "one million, two hundred twenty-eight thousand, eight hundred twelve".