1028319228 has 72 divisors (see below), whose sum is σ = 2700763520. Its totient is φ = 329546880.

The previous prime is 1028319203. The next prime is 1028319263. The reversal of 1028319228 is 8229138201.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1028319192 and 1028319201.

It is a congruent number.

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, 172278 + ... + 178146.

Almost surely, 2^1028319228 is an apocalyptic number.

1028319228 is a gapful number since it is divisible by the number (18) 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 1028319228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350381760).

1028319228 is an abundant number, since it is smaller than the sum of its proper divisors (1672444292).

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

1028319228 is a wasteful number, since it uses less digits than its factorization.

1028319228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1028319228 is about 32067.4169212302. The cubic root of 1028319228 is about 1009.3520099343.

The spelling of 1028319228 in words is "one billion, twenty-eight million, three hundred nineteen thousand, two hundred twenty-eight".