1228797792 has 216 divisors, whose sum is σ = 3774423744. Its totient is φ = 379012608.

The previous prime is 1228797767. The next prime is 1228797803. The reversal of 1228797792 is 2977978221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5510193 + ... + 5510415.

It is an arithmetic number, because the mean of its divisors is an integer number (17474184).

Almost surely, 2^1228797792 is an apocalyptic number.

1228797792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228797792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887211872).

1228797792 is an abundant number, since it is smaller than the sum of its proper divisors (2545625952).

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

1228797792 is a wasteful number, since it uses less digits than its factorization.

1228797792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 300 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 1228797792 is about 35054.2121862694. The cubic root of 1228797792 is about 1071.0920785912.

The spelling of 1228797792 in words is "one billion, two hundred twenty-eight million, seven hundred ninety-seven thousand, seven hundred ninety-two".