28698491 has 2 divisors, whose sum is σ = 28698492. Its totient is φ = 28698490.

The previous prime is 28698479. The next prime is 28698541. The reversal of 28698491 is 19489682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28698491 - 2¹⁴ = 28682107 is a prime.

It is not a weakly prime, because it can be changed into another prime (28698191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14349245 + 14349246.

It is an arithmetic number, because the mean of its divisors is an integer number (14349246).

Almost surely, 2^28698491 is an apocalyptic number.

28698491 is a deficient number, since it is larger than the sum of its proper divisors (1).

28698491 is an equidigital number, since it uses as much as digits as its factorization.

28698491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 47.

The square root of 28698491 is about 5357.0972550440. The cubic root of 28698491 is about 306.1632226161.

The spelling of 28698491 in words is "twenty-eight million, six hundred ninety-eight thousand, four hundred ninety-one".