1028745800 has 24 divisors (see below), whose sum is σ = 2391834450. Its totient is φ = 411498240.

The previous prime is 1028745799. The next prime is 1028745827. The reversal of 1028745800 is 85478201.

It can be written as a sum of positive squares in 3 ways, for example, as 738861124 + 289884676 = 27182^2 + 17026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2571665 + ... + 2572064.

Almost surely, 2^1028745800 is an apocalyptic number.

1028745800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028745800 is an abundant number, since it is smaller than the sum of its proper divisors (1363088650).

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

1028745800 is a wasteful number, since it uses less digits than its factorization.

1028745800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143745 (or 5143736 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 1028745800 is about 32074.0674065514. The cubic root of 1028745800 is about 1009.4915586178.

The spelling of 1028745800 in words is "one billion, twenty-eight million, seven hundred forty-five thousand, eight hundred".