28574872829 has 4 divisors (see below), whose sum is σ = 28936580160. Its totient is φ = 28213165500.

The previous prime is 28574872801. The next prime is 28574872849. The reversal of 28574872829 is 92827847582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28574872829 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 (28574872849) 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, 180853547 + ... + 180853704.

It is an arithmetic number, because the mean of its divisors is an integer number (7234145040).

Almost surely, 2^28574872829 is an apocalyptic number.

It is an amenable number.

28574872829 is a deficient number, since it is larger than the sum of its proper divisors (361707331).

28574872829 is an equidigital number, since it uses as much as digits as its factorization.

28574872829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361707330.

The product of its digits is 36126720, while the sum is 62.

The spelling of 28574872829 in words is "twenty-eight billion, five hundred seventy-four million, eight hundred seventy-two thousand, eight hundred twenty-nine".