28571434600 has 24 divisors (see below), whose sum is σ = 66428585910. Its totient is φ = 11428573760.

The previous prime is 28571434597. The next prime is 28571434603. The reversal of 28571434600 is 643417582.

It is an interprime number because it is at equal distance from previous prime (28571434597) and next prime (28571434603).

It can be written as a sum of positive squares in 3 ways, for example, as 24660933444 + 3910501156 = 157038^2 + 62534^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (28571434603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71428387 + ... + 71428786.

Almost surely, 2^28571434600 is an apocalyptic number.

28571434600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28571434600 is an abundant number, since it is smaller than the sum of its proper divisors (37857151310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28571434600 is a wasteful number, since it uses less digits than its factorization.

28571434600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142857189 (or 142857180 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28571434600 in words is "twenty-eight billion, five hundred seventy-one million, four hundred thirty-four thousand, six hundred".