28504031383 has 4 divisors (see below), whose sum is σ = 28971310648. Its totient is φ = 28036752120.

The previous prime is 28504031327. The next prime is 28504031429. The reversal of 28504031383 is 38313040582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28504031383 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 (28504031483) 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, 233639541 + ... + 233639662.

It is an arithmetic number, because the mean of its divisors is an integer number (7242827662).

Almost surely, 2^28504031383 is an apocalyptic number.

28504031383 is a deficient number, since it is larger than the sum of its proper divisors (467279265).

28504031383 is an equidigital number, since it uses as much as digits as its factorization.

28504031383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467279264.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 28504031383 in words is "twenty-eight billion, five hundred four million, thirty-one thousand, three hundred eighty-three".