1028767493 has 8 divisors (see below), whose sum is σ = 1123508736. Its totient is φ = 936255600.

The previous prime is 1028767469. The next prime is 1028767507. The reversal of 1028767493 is 3947678201.

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

It is a cyclic number.

It is not a de Polignac number, because 1028767493 - 2¹⁴ = 1028751109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028767403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 556373 + ... + 558218.

It is an arithmetic number, because the mean of its divisors is an integer number (140438592).

Almost surely, 2^1028767493 is an apocalyptic number.

1028767493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1028767493 is a deficient number, since it is larger than the sum of its proper divisors (94741243).

1028767493 is a wasteful number, since it uses less digits than its factorization.

1028767493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114675.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 1028767493 is about 32074.4055751623. The cubic root of 1028767493 is about 1009.4986542309.

The spelling of 1028767493 in words is "one billion, twenty-eight million, seven hundred sixty-seven thousand, four hundred ninety-three".