28914693 has 4 divisors (see below), whose sum is σ = 38552928. Its totient is φ = 19276460.

The previous prime is 28914689. The next prime is 28914707. The reversal of 28914693 is 39641982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28914693 - 2² = 28914689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28914623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4819113 + ... + 4819118.

It is an arithmetic number, because the mean of its divisors is an integer number (9638232).

Almost surely, 2^28914693 is an apocalyptic number.

It is an amenable number.

28914693 is a deficient number, since it is larger than the sum of its proper divisors (9638235).

28914693 is an equidigital number, since it uses as much as digits as its factorization.

28914693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638234.

The product of its digits is 93312, while the sum is 42.

The square root of 28914693 is about 5377.2384176267. The cubic root of 28914693 is about 306.9301336695.

The spelling of 28914693 in words is "twenty-eight million, nine hundred fourteen thousand, six hundred ninety-three".