478238651 has 8 divisors (see below), whose sum is σ = 522387264. Its totient is φ = 434202120.

The previous prime is 478238633. The next prime is 478238669. The reversal of 478238651 is 156832874.

It is an interprime number because it is at equal distance from previous prime (478238633) and next prime (478238669).

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

It is a de Polignac number, because none of the positive numbers 2^k-478238651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478238671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18965 + ... + 36278.

It is an arithmetic number, because the mean of its divisors is an integer number (65298408).

Almost surely, 2^478238651 is an apocalyptic number.

478238651 is a deficient number, since it is larger than the sum of its proper divisors (44148613).

478238651 is a wasteful number, since it uses less digits than its factorization.

478238651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56041.

The product of its digits is 322560, while the sum is 44.

The square root of 478238651 is about 21868.6682493471. The cubic root of 478238651 is about 782.0146532795.

The spelling of 478238651 in words is "four hundred seventy-eight million, two hundred thirty-eight thousand, six hundred fifty-one".