28172951104 has 21 divisors (see below), whose sum is σ = 55908364561. Its totient is φ = 14085804160.

The previous prime is 28172951041. The next prime is 28172951113. The reversal of 28172951104 is 40115927182.

The square root of 28172951104 is 167848.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14267824704 + 13905126400 = 119448^2 + 117920^2 .

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 1332294 + ... + 1353274.

Almost surely, 2^28172951104 is an apocalyptic number.

28172951104 is the 167848-th square number.

It is an amenable number.

28172951104 is a deficient number, since it is larger than the sum of its proper divisors (27735413457).

28172951104 is an frugal number, since it uses more digits than its factorization.

28172951104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41974 (or 20983 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 28172951104 in words is "twenty-eight billion, one hundred seventy-two million, nine hundred fifty-one thousand, one hundred four".