28698697 has 8 divisors (see below), whose sum is σ = 29194560. Its totient is φ = 28205520.

The previous prime is 28698679. The next prime is 28698701. The reversal of 28698697 is 79689682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28698697 - 2¹⁹ = 28174409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28638697) 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 in 7 ways as a sum of consecutive naturals, for example, 43623 + ... + 44275.

It is an arithmetic number, because the mean of its divisors is an integer number (3649320).

Almost surely, 2^28698697 is an apocalyptic number.

It is an amenable number.

28698697 is a deficient number, since it is larger than the sum of its proper divisors (495863).

28698697 is an equidigital number, since it uses as much as digits as its factorization.

28698697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343.

The product of its digits is 2612736, while the sum is 55.

The square root of 28698697 is about 5357.1164818398. The cubic root of 28698697 is about 306.1639551688.

The spelling of 28698697 in words is "twenty-eight million, six hundred ninety-eight thousand, six hundred ninety-seven".