28814417993 has 8 divisors (see below), whose sum is σ = 29105276928. Its totient is φ = 28523772864.

The previous prime is 28814417953. The next prime is 28814417999. The reversal of 28814417993 is 39971441882.

It is a happy number.

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 28814417993 - 2²⁴ = 28797640777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28814417999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224705 + ... + 328817.

It is an arithmetic number, because the mean of its divisors is an integer number (3638159616).

Almost surely, 2^28814417993 is an apocalyptic number.

It is an amenable number.

28814417993 is a deficient number, since it is larger than the sum of its proper divisors (290858935).

28814417993 is a wasteful number, since it uses less digits than its factorization.

28814417993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106903.

The product of its digits is 3483648, while the sum is 56.

The spelling of 28814417993 in words is "twenty-eight billion, eight hundred fourteen million, four hundred seventeen thousand, nine hundred ninety-three".