28913701 has 2 divisors, whose sum is σ = 28913702. Its totient is φ = 28913700.

The previous prime is 28913693. The next prime is 28913707. The reversal of 28913701 is 10731982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21068100 + 7845601 = 4590^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 28913701 - 2³ = 28913693 is a prime.

It is a super-3 number, since 3×28913701³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28913707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14456850 + 14456851.

It is an arithmetic number, because the mean of its divisors is an integer number (14456851).

Almost surely, 2^28913701 is an apocalyptic number.

It is an amenable number.

28913701 is a deficient number, since it is larger than the sum of its proper divisors (1).

28913701 is an equidigital number, since it uses as much as digits as its factorization.

28913701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 28913701 is about 5377.1461761793. The cubic root of 28913701 is about 306.9266235951.

The spelling of 28913701 in words is "twenty-eight million, nine hundred thirteen thousand, seven hundred one".