318725406 has 24 divisors (see below), whose sum is σ = 693596280. Its totient is φ = 105776496.

The previous prime is 318725387. The next prime is 318725419. The reversal of 318725406 is 604527813.

318725406 is a `hidden beast` number, since 31 + 87 + 2 + 540 + 6 = 666.

318725406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×318725406³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34540 + ... + 42783.

It is an arithmetic number, because the mean of its divisors is an integer number (28899845).

Almost surely, 2^318725406 is an apocalyptic number.

318725406 is an abundant number, since it is smaller than the sum of its proper divisors (374870874).

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

318725406 is a wasteful number, since it uses less digits than its factorization.

318725406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77560 (or 77557 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 318725406 is about 17852.8822883029. The cubic root of 318725406 is about 683.0810348114.

The spelling of 318725406 in words is "three hundred eighteen million, seven hundred twenty-five thousand, four hundred six".