478166140 has 48 divisors (see below), whose sum is σ = 1065010464. Its totient is φ = 179712000.

The previous prime is 478166131. The next prime is 478166147. The reversal of 478166140 is 41661874.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 478166140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478166147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397540 + ... + 398740.

It is an arithmetic number, because the mean of its divisors is an integer number (22187718).

Almost surely, 2^478166140 is an apocalyptic number.

It is an amenable number.

478166140 is an abundant number, since it is smaller than the sum of its proper divisors (586844324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478166140 is a wasteful number, since it uses less digits than its factorization.

478166140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 478166140 is about 21867.0103123404. The cubic root of 478166140 is about 781.9751280128.

It can be divided in two parts, 47816 and 6140, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 478166140 in words is "four hundred seventy-eight million, one hundred sixty-six thousand, one hundred forty".