1228913268 has 36 divisors (see below), whose sum is σ = 3151844640. Its totient is φ = 372397520.

The previous prime is 1228913267. The next prime is 1228913281. The reversal of 1228913268 is 8623198221.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228913267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421728 + ... + 424631.

It is an arithmetic number, because the mean of its divisors is an integer number (87551240).

Almost surely, 2^1228913268 is an apocalyptic number.

It is an amenable number.

1228913268 is an abundant number, since it is smaller than the sum of its proper divisors (1922931372).

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

1228913268 is a wasteful number, since it uses less digits than its factorization.

1228913268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846388 (or 846375 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 1228913268 is about 35055.8592534829. The cubic root of 1228913268 is about 1071.1256294204.

The spelling of 1228913268 in words is "one billion, two hundred twenty-eight million, nine hundred thirteen thousand, two hundred sixty-eight".