28631258503 has 8 divisors (see below), whose sum is σ = 29507878400. Its totient is φ = 27764219448.

The previous prime is 28631258501. The next prime is 28631258519. The reversal of 28631258503 is 30585213682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28631258503 - 2¹ = 28631258501 is a prime.

It is a super-3 number, since 3×28631258503³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28631258503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28631258501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389143 + ... + 2401096.

It is an arithmetic number, because the mean of its divisors is an integer number (3688484800).

Almost surely, 2^28631258503 is an apocalyptic number.

28631258503 is a deficient number, since it is larger than the sum of its proper divisors (876619897).

28631258503 is a wasteful number, since it uses less digits than its factorization.

28631258503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790421.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 28631258503 in words is "twenty-eight billion, six hundred thirty-one million, two hundred fifty-eight thousand, five hundred three".