1228228792 has 16 divisors (see below), whose sum is σ = 2631918960. Its totient is φ = 526383744.

The previous prime is 1228228789. The next prime is 1228228817. The reversal of 1228228792 is 2978228221.

It is a super-3 number, since 3×1228228792³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 10966273 + ... + 10966384.

It is an arithmetic number, because the mean of its divisors is an integer number (164494935).

Almost surely, 2^1228228792 is an apocalyptic number.

It is an amenable number.

1228228792 is an abundant number, since it is smaller than the sum of its proper divisors (1403690168).

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

1228228792 is a wasteful number, since it uses less digits than its factorization.

1228228792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21932670 (or 21932666 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 1228228792 is about 35046.0952461184. The cubic root of 1228228792 is about 1070.9267284984.

The spelling of 1228228792 in words is "one billion, two hundred twenty-eight million, two hundred twenty-eight thousand, seven hundred ninety-two".