478311505 has 16 divisors (see below), whose sum is σ = 659602944. Its totient is φ = 326168640.

The previous prime is 478311499. The next prime is 478311517. The reversal of 478311505 is 505113874.

It is a happy number.

It is not a de Polignac number, because 478311505 - 2³ = 478311497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31417 + ... + 44086.

It is an arithmetic number, because the mean of its divisors is an integer number (41225184).

Almost surely, 2^478311505 is an apocalyptic number.

It is an amenable number.

478311505 is a deficient number, since it is larger than the sum of its proper divisors (181291439).

478311505 is a wasteful number, since it uses less digits than its factorization.

478311505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75696.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 478311505 is about 21870.3339023436. Note that the first 3 decimals coincide. The cubic root of 478311505 is about 782.0543614898.

The spelling of 478311505 in words is "four hundred seventy-eight million, three hundred eleven thousand, five hundred five".