1028688778982 has 32 divisors (see below), whose sum is σ = 1638933458400. Its totient is φ = 482568537600.

The previous prime is 1028688778967. The next prime is 1028688778991. The reversal of 1028688778982 is 2898778868201.

1028688778982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×1028688778982⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52805828 + ... + 52825304.

It is an arithmetic number, because the mean of its divisors is an integer number (51216670575).

Almost surely, 2^{1028688778982} is an apocalyptic number.

1028688778982 is a deficient number, since it is larger than the sum of its proper divisors (610244679418).

1028688778982 is a wasteful number, since it uses less digits than its factorization.

1028688778982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24296.

The product of its (nonzero) digits is 346816512, while the sum is 74.

The spelling of 1028688778982 in words is "one trillion, twenty-eight billion, six hundred eighty-eight million, seven hundred seventy-eight thousand, nine hundred eighty-two".