28531503122 has 8 divisors (see below), whose sum is σ = 43953937356. Its totient is φ = 13880190672.

The previous prime is 28531503097. The next prime is 28531503127. The reversal of 28531503122 is 22130513582.

It can be written as a sum of positive squares in 2 ways, for example, as 27932771161 + 598731961 = 167131^2 + 24469^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28531503127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192780353 + ... + 192780500.

Almost surely, 2^28531503122 is an apocalyptic number.

28531503122 is a deficient number, since it is larger than the sum of its proper divisors (15422434234).

28531503122 is a wasteful number, since it uses less digits than its factorization.

28531503122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385560892.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 28531503122 in words is "twenty-eight billion, five hundred thirty-one million, five hundred three thousand, one hundred twenty-two".