1028764870 has 16 divisors (see below), whose sum is σ = 2116316448. Its totient is φ = 352719360.

The previous prime is 1028764787. The next prime is 1028764871. The reversal of 1028764870 is 784678201.

It is a super-2 number, since 2×1028764870² = 2116714315492233800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028764871) 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, 7348251 + ... + 7348390.

It is an arithmetic number, because the mean of its divisors is an integer number (132269778).

Almost surely, 2^1028764870 is an apocalyptic number.

1028764870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028764870 is an abundant number, since it is smaller than the sum of its proper divisors (1087551578).

1028764870 is a wasteful number, since it uses less digits than its factorization.

1028764870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14696655.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 1028764870 is about 32074.3646858359. The cubic root of 1028764870 is about 1009.4977962731.

It can be divided in two parts, 10287 and 64870, that added together give a palindrome (75157).

The spelling of 1028764870 in words is "one billion, twenty-eight million, seven hundred sixty-four thousand, eight hundred seventy".