28036501 has 2 divisors, whose sum is σ = 28036502. Its totient is φ = 28036500.

The previous prime is 28036499. The next prime is 28036529. The reversal of 28036501 is 10563082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 1100401 = 5190^2 + 1049^2 .

It is a cyclic number.

It is not a de Polignac number, because 28036501 - 2¹ = 28036499 is a prime.

Together with 28036499, it forms a pair of twin primes.

It is equal to p_1743622 and since 28036501 and 1743622 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28031501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14018250 + 14018251.

It is an arithmetic number, because the mean of its divisors is an integer number (14018251).

Almost surely, 2^28036501 is an apocalyptic number.

It is an amenable number.

28036501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28036501 is an equidigital number, since it uses as much as digits as its factorization.

28036501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 28036501 is about 5294.9505191267. The cubic root of 28036501 is about 303.7907905276.

Adding to 28036501 its reverse (10563082), we get a palindrome (38599583).

The spelling of 28036501 in words is "twenty-eight million, thirty-six thousand, five hundred one".