163256346 has 72 divisors (see below), whose sum is σ = 405830880. Its totient is φ = 47306160.

The previous prime is 163256329. The next prime is 163256371. The reversal of 163256346 is 643652361.

163256346 is a `hidden beast` number, since 1 + 63 + 256 + 346 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 163256346.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 48465 + ... + 51723.

It is an arithmetic number, because the mean of its divisors is an integer number (5636540).

Almost surely, 2^163256346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163256346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202915440).

163256346 is an abundant number, since it is smaller than the sum of its proper divisors (242574534).

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

163256346 is a wasteful number, since it uses less digits than its factorization.

163256346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312 (or 3298 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 163256346 is about 12777.1806749376. The cubic root of 163256346 is about 546.5417679332.

The spelling of 163256346 in words is "one hundred sixty-three million, two hundred fifty-six thousand, three hundred forty-six".