28660501 has 2 divisors, whose sum is σ = 28660502. Its totient is φ = 28660500.

The previous prime is 28660483. The next prime is 28660519. The reversal of 28660501 is 10506682.

It is a balanced prime because it is at equal distance from previous prime (28660483) and next prime (28660519).

It can be written as a sum of positive squares in only one way, i.e., 14447601 + 14212900 = 3801^2 + 3770^2 .

It is a cyclic number.

It is not a de Polignac number, because 28660501 - 2¹⁵ = 28627733 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28660501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28660561) 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 as a sum of consecutive naturals, namely, 14330250 + 14330251.

It is an arithmetic number, because the mean of its divisors is an integer number (14330251).

Almost surely, 2^28660501 is an apocalyptic number.

It is an amenable number.

28660501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28660501 is an equidigital number, since it uses as much as digits as its factorization.

28660501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 28660501 is about 5353.5503173128. The cubic root of 28660501 is about 306.0280671138.

It can be divided in two parts, 28660 and 501, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28660501 in words is "twenty-eight million, six hundred sixty thousand, five hundred one".