14778428 has 24 divisors (see below), whose sum is σ = 31113600. Its totient is φ = 6000048.

The previous prime is 14778427. The next prime is 14778431. The reversal of 14778428 is 82487741.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14778427) 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, 13358 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (1296400).

Almost surely, 2^14778428 is an apocalyptic number.

It is an amenable number.

14778428 is an abundant number, since it is smaller than the sum of its proper divisors (16335172).

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

14778428 is a wasteful number, since it uses less digits than its factorization.

14778428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27809 (or 27807 counting only the distinct ones).

The product of its digits is 100352, while the sum is 41.

The square root of 14778428 is about 3844.2721027524. The cubic root of 14778428 is about 245.4008598055.

The spelling of 14778428 in words is "fourteen million, seven hundred seventy-eight thousand, four hundred twenty-eight".