28172207301 has 32 divisors (see below), whose sum is σ = 44209459200. Its totient is φ = 15625172160.

The previous prime is 28172207279. The next prime is 28172207303. The reversal of 28172207301 is 10370227182.

It is not a de Polignac number, because 28172207301 - 2¹³ = 28172199109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28172207303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46030 + ... + 241791.

It is an arithmetic number, because the mean of its divisors is an integer number (1381545600).

Almost surely, 2^28172207301 is an apocalyptic number.

28172207301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28172207301 is a deficient number, since it is larger than the sum of its proper divisors (16037251899).

28172207301 is a wasteful number, since it uses less digits than its factorization.

28172207301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287969.

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 28172207301 in words is "twenty-eight billion, one hundred seventy-two million, two hundred seven thousand, three hundred one".