1078690728 has 32 divisors (see below), whose sum is σ = 2789719200. Its totient is φ = 347164608.

The previous prime is 1078690709. The next prime is 1078690729. The reversal of 1078690728 is 8270968701.

It is not an unprimeable number, because it can be changed into a prime (1078690729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774226 + ... + 775617.

It is an arithmetic number, because the mean of its divisors is an integer number (87178725).

Almost surely, 2^1078690728 is an apocalyptic number.

It is an amenable number.

1078690728 is an abundant number, since it is smaller than the sum of its proper divisors (1711028472).

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

1078690728 is a wasteful number, since it uses less digits than its factorization.

1078690728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549881 (or 1549877 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 1078690728 is about 32843.4274703479. The cubic root of 1078690728 is about 1025.5708033879.

The spelling of 1078690728 in words is "one billion, seventy-eight million, six hundred ninety thousand, seven hundred twenty-eight".