478261 has 8 divisors (see below), whose sum is σ = 578880. Its totient is φ = 385728.

The previous prime is 478259. The next prime is 478271. The reversal of 478261 is 162874.

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

It is not a de Polignac number, because 478261 - 2¹ = 478259 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478241) 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, 1891 + ... + 2128.

It is an arithmetic number, because the mean of its divisors is an integer number (72360).

2⁴⁷⁸²⁶¹ is an apocalyptic number.

It is an amenable number.

478261 is a deficient number, since it is larger than the sum of its proper divisors (100619).

478261 is a wasteful number, since it uses less digits than its factorization.

478261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043.

The product of its digits is 2688, while the sum is 28.

The square root of 478261 is about 691.5641691123. The cubic root of 478261 is about 78.2026834766.

The spelling of 478261 in words is "four hundred seventy-eight thousand, two hundred sixty-one".