163504040 has 64 divisors (see below), whose sum is σ = 422357760. Its totient is φ = 55802880.

The previous prime is 163504031. The next prime is 163504051. The reversal of 163504040 is 40405361.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 163503997 and 163504015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66269 + ... + 68691.

It is an arithmetic number, because the mean of its divisors is an integer number (6599340).

Almost surely, 2^163504040 is an apocalyptic number.

163504040 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 163504040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211178880).

163504040 is an abundant number, since it is smaller than the sum of its proper divisors (258853720).

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

163504040 is a wasteful number, since it uses less digits than its factorization.

163504040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 163504040 is about 12786.8698280697. The cubic root of 163504040 is about 546.8180342949.

The spelling of 163504040 in words is "one hundred sixty-three million, five hundred four thousand, forty".