28073701 has 2 divisors, whose sum is σ = 28073702. Its totient is φ = 28073700.

The previous prime is 28073687. The next prime is 28073707. The reversal of 28073701 is 10737082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27352900 + 720801 = 5230^2 + 849^2 .

It is a cyclic number.

It is not a de Polignac number, because 28073701 - 2¹¹ = 28071653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28073701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28073707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14036850 + 14036851.

It is an arithmetic number, because the mean of its divisors is an integer number (14036851).

Almost surely, 2^28073701 is an apocalyptic number.

It is an amenable number.

28073701 is a deficient number, since it is larger than the sum of its proper divisors (1).

28073701 is an equidigital number, since it uses as much as digits as its factorization.

28073701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 28073701 is about 5298.4621353748. The cubic root of 28073701 is about 303.9250919140.

The spelling of 28073701 in words is "twenty-eight million, seventy-three thousand, seven hundred one".