316646442 has 64 divisors (see below), whose sum is σ = 806572800. Its totient is φ = 90201600.

The previous prime is 316646441. The next prime is 316646459. The reversal of 316646442 is 244646613.

316646442 is a `hidden beast` number, since 3 + 1 + 6 + 6 + 4 + 644 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 316646397 and 316646406.

It is not an unprimeable number, because it can be changed into a prime (316646441) 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, 150534 + ... + 152622.

It is an arithmetic number, because the mean of its divisors is an integer number (12602700).

Almost surely, 2^316646442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316646442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403286400).

316646442 is an abundant number, since it is smaller than the sum of its proper divisors (489926358).

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

316646442 is a wasteful number, since it uses less digits than its factorization.

316646442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508 (or 2502 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 316646442 is about 17794.5621469032. The cubic root of 316646442 is about 681.5926064835.

The spelling of 316646442 in words is "three hundred sixteen million, six hundred forty-six thousand, four hundred forty-two".