28071701 has 8 divisors (see below), whose sum is σ = 32131584. Its totient is φ = 24024240.

The previous prime is 28071691. The next prime is 28071713. The reversal of 28071701 is 10717082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28071701 - 2¹⁰ = 28070677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28071731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2396 + ... + 7866.

It is an arithmetic number, because the mean of its divisors is an integer number (4016448).

Almost surely, 2^28071701 is an apocalyptic number.

It is an amenable number.

28071701 is a deficient number, since it is larger than the sum of its proper divisors (4059883).

28071701 is an equidigital number, since it uses as much as digits as its factorization.

28071701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 28071701 is about 5298.2733980043. The cubic root of 28071701 is about 303.9178744282.

Adding to 28071701 its reverse (10717082), we get a palindrome (38788783).

The spelling of 28071701 in words is "twenty-eight million, seventy-one thousand, seven hundred one".