1028256783 has 8 divisors (see below), whose sum is σ = 1386414000. Its totient is φ = 677802048.

The previous prime is 1028256769. The next prime is 1028256797. The reversal of 1028256783 is 3876528201.

It is an interprime number because it is at equal distance from previous prime (1028256769) and next prime (1028256797).

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

It is not a de Polignac number, because 1028256783 - 2¹³ = 1028248591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028256703) 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, 1925308 + ... + 1925841.

It is an arithmetic number, because the mean of its divisors is an integer number (173301750).

Almost surely, 2^1028256783 is an apocalyptic number.

1028256783 is a deficient number, since it is larger than the sum of its proper divisors (358157217).

1028256783 is an equidigital number, since it uses as much as digits as its factorization.

1028256783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851241.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1028256783 is about 32066.4432545925. The cubic root of 1028256783 is about 1009.3315784508.

The spelling of 1028256783 in words is "one billion, twenty-eight million, two hundred fifty-six thousand, seven hundred eighty-three".