1028045880 has 48 divisors (see below), whose sum is σ = 3341150280. Its totient is φ = 274145472.

The previous prime is 1028045873. The next prime is 1028045897. The reversal of 1028045880 is 885408201.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1427482 + ... + 1428201.

Almost surely, 2^1028045880 is an apocalyptic number.

1028045880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028045880 is an abundant number, since it is smaller than the sum of its proper divisors (2313104400).

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

1028045880 is a wasteful number, since it uses less digits than its factorization.

1028045880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855700 (or 2855693 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 1028045880 is about 32063.1545547222. The cubic root of 1028045880 is about 1009.2625666317.

The spelling of 1028045880 in words is "one billion, twenty-eight million, forty-five thousand, eight hundred eighty".