28196701 has 24 divisors (see below), whose sum is σ = 32753112. Its totient is φ = 24105600.

The previous prime is 28196699. The next prime is 28196711. The reversal of 28196701 is 10769182.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 423801 + 27772900 = 651^2 + 5270^2 .

It is not a de Polignac number, because 28196701 - 2¹ = 28196699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28196711) 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 23 ways as a sum of consecutive naturals, for example, 462211 + ... + 462271.

It is an arithmetic number, because the mean of its divisors is an integer number (1364713).

Almost surely, 2^28196701 is an apocalyptic number.

It is an amenable number.

28196701 is a deficient number, since it is larger than the sum of its proper divisors (4556411).

28196701 is a wasteful number, since it uses less digits than its factorization.

28196701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 28196701 is about 5310.0565910355. The cubic root of 28196701 is about 304.3683100874.

The spelling of 28196701 in words is "twenty-eight million, one hundred ninety-six thousand, seven hundred one".