478348261 has 8 divisors (see below), whose sum is σ = 507118104. Its totient is φ = 449648640.

The previous prime is 478348201. The next prime is 478348279. The reversal of 478348261 is 162843874.

It can be written as a sum of positive squares in 4 ways, for example, as 181440900 + 296907361 = 13470^2 + 17231^2 .

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

It is not a de Polignac number, because 478348261 - 2⁷ = 478348133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478348201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3180 + ... + 31093.

It is an arithmetic number, because the mean of its divisors is an integer number (63389763).

Almost surely, 2^478348261 is an apocalyptic number.

It is an amenable number.

478348261 is a deficient number, since it is larger than the sum of its proper divisors (28769843).

478348261 is a wasteful number, since it uses less digits than its factorization.

478348261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35111.

The product of its digits is 258048, while the sum is 43.

The square root of 478348261 is about 21871.1742025891. The cubic root of 478348261 is about 782.0743933822.

The spelling of 478348261 in words is "four hundred seventy-eight million, three hundred forty-eight thousand, two hundred sixty-one".