163900032 has 64 divisors (see below), whose sum is σ = 439538400. Its totient is φ = 54109184.

The previous prime is 163900031. The next prime is 163900063. The reversal of 163900032 is 230009361.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 163899975 and 163900011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163900031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39094 + ... + 43082.

Almost surely, 2^163900032 is an apocalyptic number.

163900032 is a gapful number since it is divisible by the number (12) 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 163900032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219769200).

163900032 is an abundant number, since it is smaller than the sum of its proper divisors (275638368).

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

163900032 is a wasteful number, since it uses less digits than its factorization.

163900032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 163900032 is about 12802.3447852337. The cubic root of 163900032 is about 547.2591263356.

Adding to 163900032 its reverse (230009361), we get a palindrome (393909393).

The spelling of 163900032 in words is "one hundred sixty-three million, nine hundred thousand, thirty-two".