28528645124383 has 4 divisors (see below), whose sum is σ = 28528803390688. Its totient is φ = 28528486858080.

The previous prime is 28528645124381. The next prime is 28528645124423. The reversal of 28528645124383 is 38342154682582.

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 28528645124383 - 2¹ = 28528645124381 is a prime.

It is a super-2 number, since 2×28528645124383² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28528645124381) 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, 78862458 + ... + 79223383.

It is an arithmetic number, because the mean of its divisors is an integer number (7132200847672).

Almost surely, 2^{28528645124383} is an apocalyptic number.

28528645124383 is a deficient number, since it is larger than the sum of its proper divisors (158266305).

28528645124383 is a wasteful number, since it uses less digits than its factorization.

28528645124383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158266304.

The product of its digits is 88473600, while the sum is 61.

The spelling of 28528645124383 in words is "twenty-eight trillion, five hundred twenty-eight billion, six hundred forty-five million, one hundred twenty-four thousand, three hundred eighty-three".