1028426867 has 8 divisors (see below), whose sum is σ = 1110009600. Its totient is φ = 947197440.

The previous prime is 1028426857. The next prime is 1028426869. The reversal of 1028426867 is 7686248201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1028426867 - 2¹² = 1028422771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028426869) 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, 82259 + ... + 93932.

It is an arithmetic number, because the mean of its divisors is an integer number (138751200).

Almost surely, 2^1028426867 is an apocalyptic number.

1028426867 is a deficient number, since it is larger than the sum of its proper divisors (81582733).

1028426867 is a wasteful number, since it uses less digits than its factorization.

1028426867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176653.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 1028426867 is about 32069.0952008316. The cubic root of 1028426867 is about 1009.3872265763.

The spelling of 1028426867 in words is "one billion, twenty-eight million, four hundred twenty-six thousand, eight hundred sixty-seven".