1028820383 has 8 divisors (see below), whose sum is σ = 1073875968. Its totient is φ = 983791864.

The previous prime is 1028820361. The next prime is 1028820389. The reversal of 1028820383 is 3830288201.

It is a happy number.

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 1028820383 - 2⁶ = 1028820319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028820389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129710 + ... + 137412.

It is an arithmetic number, because the mean of its divisors is an integer number (134234496).

Almost surely, 2^1028820383 is an apocalyptic number.

1028820383 is a deficient number, since it is larger than the sum of its proper divisors (45055585).

1028820383 is an equidigital number, since it uses as much as digits as its factorization.

1028820383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13533.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1028820383 is about 32075.2300537346. The cubic root of 1028820383 is about 1009.5159537241.

The spelling of 1028820383 in words is "one billion, twenty-eight million, eight hundred twenty thousand, three hundred eighty-three".