163020400 has 60 divisors (see below), whose sum is σ = 395355400. Its totient is φ = 64592640.

The previous prime is 163020391. The next prime is 163020419. The reversal of 163020400 is 4020361.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41731 + ... + 45469.

Almost surely, 2^163020400 is an apocalyptic number.

163020400 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 163020400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197677700).

163020400 is an abundant number, since it is smaller than the sum of its proper divisors (232335000).

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

163020400 is a wasteful number, since it uses less digits than its factorization.

163020400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866 (or 3855 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 163020400 is about 12767.9442354672. The cubic root of 163020400 is about 546.2783447529.

Adding to 163020400 its reverse (4020361), we get a palindrome (167040761).

The spelling of 163020400 in words is "one hundred sixty-three million, twenty thousand, four hundred".