1028217816 has 48 divisors (see below), whose sum is σ = 2796753960. Its totient is φ = 341262720.

The previous prime is 1028217797. The next prime is 1028217863. The reversal of 1028217816 is 6187128201.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13870 + ... + 47421.

Almost surely, 2^1028217816 is an apocalyptic number.

It is an amenable number.

1028217816 is an abundant number, since it is smaller than the sum of its proper divisors (1768536144).

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

1028217816 is a wasteful number, since it uses less digits than its factorization.

1028217816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61536 (or 61529 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1028217816 is about 32065.8356510477. The cubic root of 1028217816 is about 1009.3188283540.

The spelling of 1028217816 in words is "one billion, twenty-eight million, two hundred seventeen thousand, eight hundred sixteen".