28687213001 has 2 divisors, whose sum is σ = 28687213002. Its totient is φ = 28687213000.

The previous prime is 28687212973. The next prime is 28687213003. The reversal of 28687213001 is 10031278682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28123625401 + 563587600 = 167701^2 + 23740^2 .

It is a cyclic number.

It is not a de Polignac number, because 28687213001 - 2¹⁴ = 28687196617 is a prime.

Together with 28687213003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28687213003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14343606500 + 14343606501.

It is an arithmetic number, because the mean of its divisors is an integer number (14343606501).

Almost surely, 2^28687213001 is an apocalyptic number.

It is an amenable number.

28687213001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28687213001 is an equidigital number, since it uses as much as digits as its factorization.

28687213001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 28687213001 in words is "twenty-eight billion, six hundred eighty-seven million, two hundred thirteen thousand, one".