1028263305 has 16 divisors (see below), whose sum is σ = 1646280000. Its totient is φ = 548054208.

The previous prime is 1028263303. The next prime is 1028263307. The reversal of 1028263305 is 5033628201.

It is an interprime number because it is at equal distance from previous prime (1028263303) and next prime (1028263307).

It is not a de Polignac number, because 1028263305 - 2¹ = 1028263303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1028263303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2946 + ... + 45444.

It is an arithmetic number, because the mean of its divisors is an integer number (102892500).

Almost surely, 2^1028263305 is an apocalyptic number.

1028263305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028263305 is a deficient number, since it is larger than the sum of its proper divisors (618016695).

1028263305 is a wasteful number, since it uses less digits than its factorization.

1028263305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44120.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1028263305 is about 32066.5449495264. The cubic root of 1028263305 is about 1009.3337124335. Note that the first 3 decimals are identical.

The spelling of 1028263305 in words is "one billion, twenty-eight million, two hundred sixty-three thousand, three hundred five".