1028883505 has 8 divisors (see below), whose sum is σ = 1329634152. Its totient is φ = 759790848.

The previous prime is 1028883487. The next prime is 1028883511. The reversal of 1028883505 is 5053888201.

It can be written as a sum of positive squares in 4 ways, for example, as 18215824 + 1010667681 = 4268^2 + 31791^2 .

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 1028883505 - 2¹¹ = 1028881457 is a prime.

It is a super-2 number, since 2×1028883505² = 2117202533722170050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7914424 + ... + 7914553.

It is an arithmetic number, because the mean of its divisors is an integer number (166204269).

Almost surely, 2^1028883505 is an apocalyptic number.

It is an amenable number.

1028883505 is a deficient number, since it is larger than the sum of its proper divisors (300750647).

1028883505 is a wasteful number, since it uses less digits than its factorization.

1028883505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15828995.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 1028883505 is about 32076.2140066436. The cubic root of 1028883505 is about 1009.5365991688.

It can be divided in two parts, 1028883 and 505, that multiplied together give a palindrome (519585915).

The spelling of 1028883505 in words is "one billion, twenty-eight million, eight hundred eighty-three thousand, five hundred five".