1228993432 has 16 divisors (see below), whose sum is σ = 2304878400. Its totient is φ = 614359200.

The previous prime is 1228993429. The next prime is 1228993433. The reversal of 1228993432 is 2343998221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228993433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27682 + ... + 56782.

It is an arithmetic number, because the mean of its divisors is an integer number (144054900).

Almost surely, 2^1228993432 is an apocalyptic number.

It is an amenable number.

1228993432 is a deficient number, since it is larger than the sum of its proper divisors (1075884968).

1228993432 is a wasteful number, since it uses less digits than its factorization.

1228993432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34386 (or 34382 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 1228993432 is about 35057.0026100350. The cubic root of 1228993432 is about 1071.1489193330.

The spelling of 1228993432 in words is "one billion, two hundred twenty-eight million, nine hundred ninety-three thousand, four hundred thirty-two".