28112458101 has 64 divisors (see below), whose sum is σ = 48385548288. Its totient is φ = 14111209728.

The previous prime is 28112458091. The next prime is 28112458123. The reversal of 28112458101 is 10185421182.

It is not a de Polignac number, because 28112458101 - 2⁶ = 28112458037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28112458141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1225600 + ... + 1248326.

It is an arithmetic number, because the mean of its divisors is an integer number (756024192).

Almost surely, 2^28112458101 is an apocalyptic number.

28112458101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28112458101 is a deficient number, since it is larger than the sum of its proper divisors (20273090187).

28112458101 is a wasteful number, since it uses less digits than its factorization.

28112458101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22970.

The product of its (nonzero) digits is 5120, while the sum is 33.

Adding to 28112458101 its reverse (10185421182), we get a palindrome (38297879283).

The spelling of 28112458101 in words is "twenty-eight billion, one hundred twelve million, four hundred fifty-eight thousand, one hundred one".