1028147905 has 8 divisors (see below), whose sum is σ = 1233979200. Its totient is φ = 822383856.

The previous prime is 1028147899. The next prime is 1028147921. The reversal of 1028147905 is 5097418201.

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 1028147905 - 2¹³ = 1028139713 is a prime.

It is a super-2 number, since 2×1028147905² = 2114176229111778050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27406 + ... + 52984.

It is an arithmetic number, because the mean of its divisors is an integer number (154247400).

Almost surely, 2^1028147905 is an apocalyptic number.

It is an amenable number.

1028147905 is a deficient number, since it is larger than the sum of its proper divisors (205831295).

1028147905 is an equidigital number, since it uses as much as digits as its factorization.

1028147905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33623.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1028147905 is about 32064.7455159089. The cubic root of 1028147905 is about 1009.2959524981.

The spelling of 1028147905 in words is "one billion, twenty-eight million, one hundred forty-seven thousand, nine hundred five".