1028452831 has 4 divisors (see below), whose sum is σ = 1175374672. Its totient is φ = 881530992.

The previous prime is 1028452819. The next prime is 1028452849. The reversal of 1028452831 is 1382548201.

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: 1382548201 = 10607 ⋅130343.

It is a cyclic number.

It is not a de Polignac number, because 1028452831 - 2¹¹ = 1028450783 is a prime.

It is a super-2 number, since 2×1028452831² = 2115430451183829122, which contains 22 as substring.

It is the 32070-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028452811) by changing a digit.

It is a nontrivial repunit in base 32069.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73460910 + ... + 73460923.

It is an arithmetic number, because the mean of its divisors is an integer number (293843668).

Almost surely, 2^1028452831 is an apocalyptic number.

1028452831 is a deficient number, since it is larger than the sum of its proper divisors (146921841).

1028452831 is an equidigital number, since it uses as much as digits as its factorization.

1028452831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146921840.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1028452831 is about 32069.5000116934. The cubic root of 1028452831 is about 1009.3957209445.

The spelling of 1028452831 in words is "one billion, twenty-eight million, four hundred fifty-two thousand, eight hundred thirty-one".