478306785 has 32 divisors (see below), whose sum is σ = 837060480. Its totient is φ = 231296000.

The previous prime is 478306783. The next prime is 478306819. The reversal of 478306785 is 587603874.

It is not a de Polignac number, because 478306785 - 2¹ = 478306783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478306783) 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, 62551 + ... + 69779.

It is an arithmetic number, because the mean of its divisors is an integer number (26158140).

Almost surely, 2^478306785 is an apocalyptic number.

It is an amenable number.

478306785 is a deficient number, since it is larger than the sum of its proper divisors (358753695).

478306785 is a wasteful number, since it uses less digits than its factorization.

478306785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 478306785 is about 21870.2259933454. The cubic root of 478306785 is about 782.0517890318.

It can be divided in two parts, 47830 and 6785, that added together give a triangular number (54615 = T₃₃₀).

The spelling of 478306785 in words is "four hundred seventy-eight million, three hundred six thousand, seven hundred eighty-five".