1028677879 has 16 divisors (see below), whose sum is σ = 1123430400. Its totient is φ = 938183904.

The previous prime is 1028677817. The next prime is 1028677883. The reversal of 1028677879 is 9787768201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1028677879 - 2⁷ = 1028677751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028677889) 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, 199674 + ... + 204760.

It is an arithmetic number, because the mean of its divisors is an integer number (70214400).

Almost surely, 2^1028677879 is an apocalyptic number.

1028677879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1028677879 is a deficient number, since it is larger than the sum of its proper divisors (94752521).

1028677879 is a wasteful number, since it uses less digits than its factorization.

1028677879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The square root of 1028677879 is about 32073.0085741890. The cubic root of 1028677879 is about 1009.4693415372.

The spelling of 1028677879 in words is "one billion, twenty-eight million, six hundred seventy-seven thousand, eight hundred seventy-nine".