478731505 has 32 divisors (see below), whose sum is σ = 692812800. Its totient is φ = 310226112.

The previous prime is 478731503. The next prime is 478731511. The reversal of 478731505 is 505137874.

It is not a de Polignac number, because 478731505 - 2¹ = 478731503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478731503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411054 + ... + 412216.

It is an arithmetic number, because the mean of its divisors is an integer number (21650400).

Almost surely, 2^478731505 is an apocalyptic number.

It is an amenable number.

478731505 is a deficient number, since it is larger than the sum of its proper divisors (214081295).

478731505 is a wasteful number, since it uses less digits than its factorization.

478731505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 478731505 is about 21879.9338435929. The cubic root of 478731505 is about 782.2831989283.

The spelling of 478731505 in words is "four hundred seventy-eight million, seven hundred thirty-one thousand, five hundred five".