1028956986 has 32 divisors (see below), whose sum is σ = 2291785920. Its totient is φ = 342203472.

The previous prime is 1028956963. The next prime is 1028957021. The reversal of 1028956986 is 6896598201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon 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, 2416 + ... + 45428.

It is an arithmetic number, because the mean of its divisors is an integer number (71618310).

Almost surely, 2^1028956986 is an apocalyptic number.

1028956986 is an abundant number, since it is smaller than the sum of its proper divisors (1262828934).

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

1028956986 is a wasteful number, since it uses less digits than its factorization.

1028956986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43467 (or 43461 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 1028956986 is about 32077.3593988034. The cubic root of 1028956986 is about 1009.5606316897.

The spelling of 1028956986 in words is "one billion, twenty-eight million, nine hundred fifty-six thousand, nine hundred eighty-six".