28531472101 has 16 divisors (see below), whose sum is σ = 33233840640. Its totient is φ = 24232990320.

The previous prime is 28531472093. The next prime is 28531472149. The reversal of 28531472101 is 10127413582.

It is not a de Polignac number, because 28531472101 - 2³ = 28531472093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28531472701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1300431 + ... + 1322188.

It is an arithmetic number, because the mean of its divisors is an integer number (2077115040).

Almost surely, 2^28531472101 is an apocalyptic number.

It is an amenable number.

28531472101 is a deficient number, since it is larger than the sum of its proper divisors (4702368539).

28531472101 is a wasteful number, since it uses less digits than its factorization.

28531472101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622696.

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 28531472101 its reverse (10127413582), we get a palindrome (38658885683).

The spelling of 28531472101 in words is "twenty-eight billion, five hundred thirty-one million, four hundred seventy-two thousand, one hundred one".