478043781 has 24 divisors (see below), whose sum is σ = 682288704. Its totient is φ = 297622080.

The previous prime is 478043767. The next prime is 478043821. The reversal of 478043781 is 187340874.

It is not a de Polignac number, because 478043781 - 2⁶ = 478043717 is a prime.

It is a super-2 number, since 2×478043781² = 457051713105551922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478043701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73785 + ... + 80001.

It is an arithmetic number, because the mean of its divisors is an integer number (28428696).

Almost surely, 2^478043781 is an apocalyptic number.

It is an amenable number.

478043781 is a deficient number, since it is larger than the sum of its proper divisors (204244923).

478043781 is a wasteful number, since it uses less digits than its factorization.

478043781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329 (or 6310 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 478043781 is about 21864.2123343147. The cubic root of 478043781 is about 781.9084218695.

The spelling of 478043781 in words is "four hundred seventy-eight million, forty-three thousand, seven hundred eighty-one".