28387625383 has 4 divisors (see below), whose sum is σ = 30571288888. Its totient is φ = 26203961880.

The previous prime is 28387625353. The next prime is 28387625407. The reversal of 28387625383 is 38352678382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28387625383 - 2⁵ = 28387625351 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 (28387625353) 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, 1091831733 + ... + 1091831758.

It is an arithmetic number, because the mean of its divisors is an integer number (7642822222).

Almost surely, 2^28387625383 is an apocalyptic number.

28387625383 is a deficient number, since it is larger than the sum of its proper divisors (2183663505).

28387625383 is a wasteful number, since it uses less digits than its factorization.

28387625383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183663504.

The product of its digits is 11612160, while the sum is 55.

The spelling of 28387625383 in words is "twenty-eight billion, three hundred eighty-seven million, six hundred twenty-five thousand, three hundred eighty-three".