28085771430 has 24 divisors (see below), whose sum is σ = 73023005952. Its totient is φ = 7489539024.

The previous prime is 28085771401. The next prime is 28085771459. The reversal of 28085771430 is 3417758082.

It is an interprime number because it is at equal distance from previous prime (28085771401) and next prime (28085771459).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156031974 + ... + 156032153.

It is an arithmetic number, because the mean of its divisors is an integer number (3042625248).

Almost surely, 2^28085771430 is an apocalyptic number.

28085771430 is an abundant number, since it is smaller than the sum of its proper divisors (44937234522).

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

28085771430 is a wasteful number, since it uses less digits than its factorization.

28085771430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312064140 (or 312064137 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 28085771430 in words is "twenty-eight billion, eighty-five million, seven hundred seventy-one thousand, four hundred thirty".