478864650 has 96 divisors (see below), whose sum is σ = 1317772800. Its totient is φ = 114097600.

The previous prime is 478864643. The next prime is 478864663. The reversal of 478864650 is 56468874.

It is a super-2 number, since 2×478864650² = 458622706039245000, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 478864650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94891 + ... + 99809.

It is an arithmetic number, because the mean of its divisors is an integer number (13726800).

Almost surely, 2^478864650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478864650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658886400).

478864650 is an abundant number, since it is smaller than the sum of its proper divisors (838908150).

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

478864650 is a wasteful number, since it uses less digits than its factorization.

478864650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 478864650 is about 21882.9762600977. The cubic root of 478864650 is about 782.3557151793.

The spelling of 478864650 in words is "four hundred seventy-eight million, eight hundred sixty-four thousand, six hundred fifty".