28851701 has 2 divisors, whose sum is σ = 28851702. Its totient is φ = 28851700.

The previous prime is 28851689. The next prime is 28851707. The reversal of 28851701 is 10715882.

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., 25260676 + 3591025 = 5026^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 28851701 - 2¹⁸ = 28589557 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28851707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14425850 + 14425851.

It is an arithmetic number, because the mean of its divisors is an integer number (14425851).

Almost surely, 2^28851701 is an apocalyptic number.

It is an amenable number.

28851701 is a deficient number, since it is larger than the sum of its proper divisors (1).

28851701 is an equidigital number, since it uses as much as digits as its factorization.

28851701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 28851701 is about 5371.3779423906. The cubic root of 28851701 is about 306.7070844386.

The spelling of 28851701 in words is "twenty-eight million, eight hundred fifty-one thousand, seven hundred one".