478223998 has 8 divisors (see below), whose sum is σ = 819812592. Its totient is φ = 204953136.

The previous prime is 478223987. The next prime is 478224017. The reversal of 478223998 is 899322874.

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

It is a congruent number.

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, 17079415 + ... + 17079442.

It is an arithmetic number, because the mean of its divisors is an integer number (102476574).

Almost surely, 2^478223998 is an apocalyptic number.

478223998 is a deficient number, since it is larger than the sum of its proper divisors (341588594).

478223998 is a wasteful number, since it uses less digits than its factorization.

478223998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34158866.

The product of its digits is 1741824, while the sum is 52.

The square root of 478223998 is about 21868.3332240937. Note that the first 3 decimals coincide. The cubic root of 478223998 is about 782.0066663482.

The spelling of 478223998 in words is "four hundred seventy-eight million, two hundred twenty-three thousand, nine hundred ninety-eight".