478237 has 4 divisors (see below), whose sum is σ = 493696. Its totient is φ = 462780.

The previous prime is 478213. The next prime is 478241. The reversal of 478237 is 732874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 732874 = 2 ⋅366437.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 15427 = 478237 / (4 + 7 + 8 + 2 + 3 + 7).

It is a d-powerful number, because it can be written as 4⁴ + 7⁶ + 2¹⁵ + 8⁵ + 3¹¹ + 7⁶ .

It is a Duffinian number.

478237 is a lucky number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 478199 and 478208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7683 + ... + 7744.

It is an arithmetic number, because the mean of its divisors is an integer number (123424).

2⁴⁷⁸²³⁷ is an apocalyptic number.

It is an amenable number.

478237 is a deficient number, since it is larger than the sum of its proper divisors (15459).

478237 is a wasteful number, since it uses less digits than its factorization.

478237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15458.

The product of its digits is 9408, while the sum is 31.

The square root of 478237 is about 691.5468169257. The cubic root of 478237 is about 78.2013753375.

The spelling of 478237 in words is "four hundred seventy-eight thousand, two hundred thirty-seven".