1026634856 has 32 divisors (see below), whose sum is σ = 2129048040. Its totient is φ = 461023488.

The previous prime is 1026634849. The next prime is 1026634871. The reversal of 1026634856 is 6584366201.

It can be written as a sum of positive squares in 4 ways, for example, as 1022080900 + 4553956 = 31970^2 + 2134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129551 + ... + 137246.

Almost surely, 2^1026634856 is an apocalyptic number.

It is an amenable number.

1026634856 is an abundant number, since it is smaller than the sum of its proper divisors (1102413184).

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

1026634856 is a wasteful number, since it uses less digits than its factorization.

1026634856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266853 (or 266849 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 1026634856 is about 32041.1431756109. The cubic root of 1026634856 is about 1008.8006074377.

The spelling of 1026634856 in words is "one billion, twenty-six million, six hundred thirty-four thousand, eight hundred fifty-six".