28238125430 has 16 divisors (see below), whose sum is σ = 50855971824. Its totient is φ = 11289173280.

The previous prime is 28238125397. The next prime is 28238125459. The reversal of 28238125430 is 3452183282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740072 + ... + 777291.

It is an arithmetic number, because the mean of its divisors is an integer number (3178498239).

Almost surely, 2^28238125430 is an apocalyptic number.

28238125430 is a deficient number, since it is larger than the sum of its proper divisors (22617846394).

28238125430 is a wasteful number, since it uses less digits than its factorization.

28238125430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519231.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 28238125430 in words is "twenty-eight billion, two hundred thirty-eight million, one hundred twenty-five thousand, four hundred thirty".