28871431743 has 32 divisors (see below), whose sum is σ = 50080776192. Its totient is φ = 14346050400.

The previous prime is 28871431733. The next prime is 28871431769. The reversal of 28871431743 is 34713417882.

It is not a de Polignac number, because 28871431743 - 2⁵ = 28871431711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28871431692 and 28871431701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871431733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2711743 + ... + 2722368.

It is an arithmetic number, because the mean of its divisors is an integer number (1565024256).

Almost surely, 2^28871431743 is an apocalyptic number.

28871431743 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28871431743 is a deficient number, since it is larger than the sum of its proper divisors (21209344449).

28871431743 is a wasteful number, since it uses less digits than its factorization.

28871431743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434155.

The product of its digits is 903168, while the sum is 48.

The spelling of 28871431743 in words is "twenty-eight billion, eight hundred seventy-one million, four hundred thirty-one thousand, seven hundred forty-three".