1228673412 has 36 divisors (see below), whose sum is σ = 3145134720. Its totient is φ = 404372592.

The previous prime is 1228673359. The next prime is 1228673417. The reversal of 1228673412 is 2143768221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1228673417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213168 + ... + 218855.

Almost surely, 2^1228673412 is an apocalyptic number.

1228673412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228673412 is an abundant number, since it is smaller than the sum of its proper divisors (1916461308).

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

1228673412 is a wasteful number, since it uses less digits than its factorization.

1228673412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432112 (or 432107 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1228673412 is about 35052.4380321826. The cubic root of 1228673412 is about 1071.0559384091.

The spelling of 1228673412 in words is "one billion, two hundred twenty-eight million, six hundred seventy-three thousand, four hundred twelve".