1028226860 has 48 divisors (see below), whose sum is σ = 2182717152. Its totient is φ = 406848000.

The previous prime is 1028226851. The next prime is 1028226863. The reversal of 1028226860 is 686228201.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1028226860.

It is not an unprimeable number, because it can be changed into a prime (1028226863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1574294 + ... + 1574946.

It is an arithmetic number, because the mean of its divisors is an integer number (45473274).

Almost surely, 2^1028226860 is an apocalyptic number.

1028226860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028226860 is an abundant number, since it is smaller than the sum of its proper divisors (1154490292).

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

1028226860 is a wasteful number, since it uses less digits than its factorization.

1028226860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1028226860 is about 32065.9766731032. The cubic root of 1028226860 is about 1009.3217876014.

The spelling of 1028226860 in words is "one billion, twenty-eight million, two hundred twenty-six thousand, eight hundred sixty".