1028590001 has 4 divisors (see below), whose sum is σ = 1053677604. Its totient is φ = 1003502400.

The previous prime is 1028589997. The next prime is 1028590007. The reversal of 1028590001 is 1000958201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000958201 = 47 ⋅21296983.

It can be written as a sum of positive squares in 2 ways, for example, as 478734400 + 549855601 = 21880^2 + 23449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028590001 - 2² = 1028589997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028590007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12543740 + ... + 12543821.

It is an arithmetic number, because the mean of its divisors is an integer number (263419401).

Almost surely, 2^1028590001 is an apocalyptic number.

It is an amenable number.

1028590001 is a deficient number, since it is larger than the sum of its proper divisors (25087603).

1028590001 is an equidigital number, since it uses as much as digits as its factorization.

1028590001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25087602.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1028590001 is about 32071.6385767862. The cubic root of 1028590001 is about 1009.4405950349.

The spelling of 1028590001 in words is "one billion, twenty-eight million, five hundred ninety thousand, one".