1028677880 has 32 divisors (see below), whose sum is σ = 2317937040. Its totient is φ = 410864640.

The previous prime is 1028677817. The next prime is 1028677883. The reversal of 1028677880 is 887768201.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028677883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9032 + ... + 46248.

Almost surely, 2^1028677880 is an apocalyptic number.

1028677880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028677880 is an abundant number, since it is smaller than the sum of its proper divisors (1289259160).

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

1028677880 is a wasteful number, since it uses less digits than its factorization.

1028677880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37919 (or 37915 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 47.

The square root of 1028677880 is about 32073.0085897784. The cubic root of 1028677880 is about 1009.4693418643.

The spelling of 1028677880 in words is "one billion, twenty-eight million, six hundred seventy-seven thousand, eight hundred eighty".