163115400 has 192 divisors, whose sum is σ = 587105280. Its totient is φ = 36691200.

The previous prime is 163115369. The next prime is 163115411. The reversal of 163115400 is 4511361.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 47 ways as a sum of consecutive naturals, for example, 297927 + ... + 298473.

It is an arithmetic number, because the mean of its divisors is an integer number (3057840).

Almost surely, 2^163115400 is an apocalyptic number.

163115400 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 163115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293552640).

163115400 is an abundant number, since it is smaller than the sum of its proper divisors (423989880).

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

163115400 is a wasteful number, since it uses less digits than its factorization.

163115400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 163115400 is about 12771.6639479748. The cubic root of 163115400 is about 546.3844385611.

Adding to 163115400 its reverse (4511361), we get a palindrome (167626761).

The spelling of 163115400 in words is "one hundred sixty-three million, one hundred fifteen thousand, four hundred".