163263240 has 384 divisors, whose sum is σ = 665832960. Its totient is φ = 33841152.

The previous prime is 163263227. The next prime is 163263251. The reversal of 163263240 is 42362361.

163263240 is a `hidden beast` number, since 1 + 632 + 6 + 3 + 24 + 0 = 666.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 1585029 + ... + 1585131.

It is an arithmetic number, because the mean of its divisors is an integer number (1733940).

Almost surely, 2^163263240 is an apocalyptic number.

163263240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163263240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332916480).

163263240 is an abundant number, since it is smaller than the sum of its proper divisors (502569720).

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

163263240 is a wasteful number, since it uses less digits than its factorization.

163263240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 163263240 is about 12777.4504499137. The cubic root of 163263240 is about 546.5494609591.

The spelling of 163263240 in words is "one hundred sixty-three million, two hundred sixty-three thousand, two hundred forty".