18828478 has 8 divisors (see below), whose sum is σ = 28271880. Its totient is φ = 9404520.

The previous prime is 18828463. The next prime is 18828479. The reversal of 18828478 is 87482881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18828479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133 + ... + 6496.

It is an arithmetic number, because the mean of its divisors is an integer number (3533985).

Almost surely, 2^18828478 is an apocalyptic number.

18828478 is a deficient number, since it is larger than the sum of its proper divisors (9443402).

18828478 is a wasteful number, since it uses less digits than its factorization.

18828478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722.

The product of its digits is 229376, while the sum is 46.

The square root of 18828478 is about 4339.1794155116. The cubic root of 18828478 is about 266.0347722459.

It can be divided in two parts, 18828 and 478, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 18828478 in words is "eighteen million, eight hundred twenty-eight thousand, four hundred seventy-eight".