1028764797 has 8 divisors (see below), whose sum is σ = 1372052256. Its totient is φ = 685660272.

The previous prime is 1028764787. The next prime is 1028764871. The reversal of 1028764797 is 7974678201.

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

It is not a de Polignac number, because 1028764797 - 2⁷ = 1028764669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028764777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32023 + ... + 55524.

It is an arithmetic number, because the mean of its divisors is an integer number (171506532).

Almost surely, 2^1028764797 is an apocalyptic number.

It is an amenable number.

1028764797 is a deficient number, since it is larger than the sum of its proper divisors (343287459).

1028764797 is an equidigital number, since it uses as much as digits as its factorization.

1028764797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91467.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The square root of 1028764797 is about 32074.3635478555. The cubic root of 1028764797 is about 1009.4977723955.

The spelling of 1028764797 in words is "one billion, twenty-eight million, seven hundred sixty-four thousand, seven hundred ninety-seven".