28603487331 has 6 divisors (see below), whose sum is σ = 41316148380. Its totient is φ = 19068991548.

The previous prime is 28603487317. The next prime is 28603487351. The reversal of 28603487331 is 13378430682.

28603487331 is a `hidden beast` number, since 2 + 8 + 603 + 4 + 8 + 7 + 3 + 31 = 666.

It is not a de Polignac number, because 28603487331 - 2⁷ = 28603487203 is a prime.

It is a super-2 number, since 2×28603487331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28603487351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1589082621 + ... + 1589082638.

It is an arithmetic number, because the mean of its divisors is an integer number (6886024730).

Almost surely, 2^28603487331 is an apocalyptic number.

28603487331 is a deficient number, since it is larger than the sum of its proper divisors (12712661049).

28603487331 is a wasteful number, since it uses less digits than its factorization.

28603487331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178165265 (or 3178165262 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 28603487331 in words is "twenty-eight billion, six hundred three million, four hundred eighty-seven thousand, three hundred thirty-one".