478221634 has 8 divisors (see below), whose sum is σ = 782544528. Its totient is φ = 217373460.

The previous prime is 478221547. The next prime is 478221641. The reversal of 478221634 is 436122874.

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

It is a junction number, because it is equal to n+sod(n) for n = 478221593 and 478221602.

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, 10868652 + ... + 10868695.

It is an arithmetic number, because the mean of its divisors is an integer number (97818066).

Almost surely, 2^478221634 is an apocalyptic number.

478221634 is a deficient number, since it is larger than the sum of its proper divisors (304322894).

478221634 is a wasteful number, since it uses less digits than its factorization.

478221634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737360.

The product of its digits is 64512, while the sum is 37.

The square root of 478221634 is about 21868.2791732683. The cubic root of 478221634 is about 782.0053777841.

The spelling of 478221634 in words is "four hundred seventy-eight million, two hundred twenty-one thousand, six hundred thirty-four".