14427228978 has 30 divisors (see below), whose sum is σ = 32331105741. Its totient is φ = 4808566728.

The previous prime is 14427228947. The next prime is 14427228983. The reversal of 14427228978 is 87982272441.

It can be written as a sum of positive squares in 2 ways, for example, as 14356113489 + 71115489 = 119817^2 + 8433^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=84933.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1524076 + ... + 1533512.

Almost surely, 2^14427228978 is an apocalyptic number.

14427228978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

14427228978 is an abundant number, since it is smaller than the sum of its proper divisors (17903876763).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14427228978 is an frugal number, since it uses more digits than its factorization.

14427228978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18888 (or 9442 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 14427228978 in words is "fourteen billion, four hundred twenty-seven million, two hundred twenty-eight thousand, nine hundred seventy-eight".