1028273633 has 4 divisors (see below), whose sum is σ = 1029215508. Its totient is φ = 1027331760.

The previous prime is 1028273629. The next prime is 1028273641. The reversal of 1028273633 is 3363728201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3363728201 = 37 ⋅90911573.

It can be written as a sum of positive squares in 2 ways, for example, as 580231744 + 448041889 = 24088^2 + 21167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028273633 - 2² = 1028273629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1028273593 and 1028273602.

It is not an unprimeable number, because it can be changed into a prime (1028273683) 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, 469298 + ... + 471483.

It is an arithmetic number, because the mean of its divisors is an integer number (257303877).

Almost surely, 2^1028273633 is an apocalyptic number.

It is an amenable number.

1028273633 is a deficient number, since it is larger than the sum of its proper divisors (941875).

1028273633 is an equidigital number, since it uses as much as digits as its factorization.

1028273633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941874.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 1028273633 is about 32066.7059892344. The cubic root of 1028273633 is about 1009.3370917118.

The spelling of 1028273633 in words is "one billion, twenty-eight million, two hundred seventy-three thousand, six hundred thirty-three".