1028723471 has 4 divisors (see below), whose sum is σ = 1031315112. Its totient is φ = 1026131832.

The previous prime is 1028723447. The next prime is 1028723477. The reversal of 1028723471 is 1743278201.

1028723471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1028723471 - 2⁶ = 1028723407 is a prime.

It is a super-3 number, since 3×1028723471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028723477) 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, 1295225 + ... + 1296018.

It is an arithmetic number, because the mean of its divisors is an integer number (257828778).

Almost surely, 2^1028723471 is an apocalyptic number.

1028723471 is a deficient number, since it is larger than the sum of its proper divisors (2591641).

1028723471 is an equidigital number, since it uses as much as digits as its factorization.

1028723471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591640.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 1028723471 is about 32073.7193197172. The cubic root of 1028723471 is about 1009.4842548699.

The spelling of 1028723471 in words is "one billion, twenty-eight million, seven hundred twenty-three thousand, four hundred seventy-one".