28528536280 has 32 divisors (see below), whose sum is σ = 64284081840. Its totient is φ = 11394547840.

The previous prime is 28528536259. The next prime is 28528536287. The reversal of 28528536280 is 8263582582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28528536287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499666 + ... + 553825.

Almost surely, 2^28528536280 is an apocalyptic number.

28528536280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28528536280 is an abundant number, since it is smaller than the sum of its proper divisors (35755545560).

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

28528536280 is a wasteful number, since it uses less digits than its factorization.

28528536280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054179 (or 1054175 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 28528536280 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred thirty-six thousand, two hundred eighty".