1028617387 has 8 divisors (see below), whose sum is σ = 1195488000. Its totient is φ = 866728104.

The previous prime is 1028617361. The next prime is 1028617393. The reversal of 1028617387 is 7837168201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028617387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1028617357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244887 + ... + 1245712.

It is an arithmetic number, because the mean of its divisors is an integer number (149436000).

Almost surely, 2^1028617387 is an apocalyptic number.

1028617387 is a deficient number, since it is larger than the sum of its proper divisors (166870613).

1028617387 is an equidigital number, since it uses as much as digits as its factorization.

1028617387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490665.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 1028617387 is about 32072.0655243781. The cubic root of 1028617387 is about 1009.4495536724.

The spelling of 1028617387 in words is "one billion, twenty-eight million, six hundred seventeen thousand, three hundred eighty-seven".