28505850582 has 24 divisors (see below), whose sum is σ = 62665755768. Its totient is φ = 8638136320.

The previous prime is 28505850533. The next prime is 28505850587.

28505850582 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28505850587) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19631403 + ... + 19632854.

It is an arithmetic number, because the mean of its divisors is an integer number (2611073157).

Almost surely, 2^28505850582 is an apocalyptic number.

28505850582 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28505850582 is an abundant number, since it is smaller than the sum of its proper divisors (34159905186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28505850582 is a wasteful number, since it uses less digits than its factorization.

28505850582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39264284 (or 39264273 counting only the distinct ones).

The product of its (nonzero) digits is 1280000, while the sum is 48.

The spelling of 28505850582 in words is "twenty-eight billion, five hundred five million, eight hundred fifty thousand, five hundred eighty-two".