1228565800 has 96 divisors (see below), whose sum is σ = 3561289920. Its totient is φ = 382924800.

The previous prime is 1228565713. The next prime is 1228565813. The reversal of 1228565800 is 85658221.

It is a self number, because there is not a number n which added to its sum of digits gives 1228565800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24489 + ... + 55288.

It is an arithmetic number, because the mean of its divisors is an integer number (37096770).

Almost surely, 2^1228565800 is an apocalyptic number.

1228565800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228565800 is an abundant number, since it is smaller than the sum of its proper divisors (2332724120).

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

1228565800 is a wasteful number, since it uses less digits than its factorization.

1228565800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79811 (or 79802 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 1228565800 is about 35050.9029840887. The cubic root of 1228565800 is about 1071.0246684134.

The spelling of 1228565800 in words is "one billion, two hundred twenty-eight million, five hundred sixty-five thousand, eight hundred".