28528244316 has 72 divisors (see below), whose sum is σ = 84720255984. Its totient is φ = 7979927040.

The previous prime is 28528244309. The next prime is 28528244341. The reversal of 28528244316 is 61344282582.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2765661 + ... + 2775956.

It is an arithmetic number, because the mean of its divisors is an integer number (1176670222).

Almost surely, 2^28528244316 is an apocalyptic number.

28528244316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28528244316 is an abundant number, since it is smaller than the sum of its proper divisors (56192011668).

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

28528244316 is a wasteful number, since it uses less digits than its factorization.

28528244316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541651 (or 5541646 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The spelling of 28528244316 in words is "twenty-eight billion, five hundred twenty-eight million, two hundred forty-four thousand, three hundred sixteen".