478728146 has 8 divisors (see below), whose sum is σ = 773330124. Its totient is φ = 220951440.

The previous prime is 478728137. The next prime is 478728157. The reversal of 478728146 is 641827874.

It can be written as a sum of positive squares in 2 ways, for example, as 478515625 + 212521 = 21875^2 + 461^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 478728146.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9206285 + ... + 9206336.

Almost surely, 2^478728146 is an apocalyptic number.

478728146 is a deficient number, since it is larger than the sum of its proper divisors (294601978).

478728146 is a wasteful number, since it uses less digits than its factorization.

478728146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18412636.

The product of its digits is 602112, while the sum is 47.

The square root of 478728146 is about 21879.8570836283. The cubic root of 478728146 is about 782.2813693047.

It can be divided in two parts, 478728 and 146, that added together give a palindrome (478874).

The spelling of 478728146 in words is "four hundred seventy-eight million, seven hundred twenty-eight thousand, one hundred forty-six".