14778893 has 6 divisors (see below), whose sum is σ = 15306954. Its totient is φ = 14268464.

The previous prime is 14778887. The next prime is 14778913. The reversal of 14778893 is 39887741.

It can be written as a sum of positive squares in 3 ways, for example, as 3636649 + 11142244 = 1907^2 + 3338^2 .

It is not a de Polignac number, because 14778893 - 2¹⁴ = 14762509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14778833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7946 + ... + 9627.

It is an arithmetic number, because the mean of its divisors is an integer number (2551159).

Almost surely, 2^14778893 is an apocalyptic number.

It is an amenable number.

14778893 is a deficient number, since it is larger than the sum of its proper divisors (528061).

14778893 is an equidigital number, since it uses as much as digits as its factorization.

14778893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17631 (or 17602 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The square root of 14778893 is about 3844.3325818665. The cubic root of 14778893 is about 245.4034336066.

The spelling of 14778893 in words is "fourteen million, seven hundred seventy-eight thousand, eight hundred ninety-three".