163894272 has 88 divisors (see below), whose sum is σ = 451191552. Its totient is φ = 52838400.

The previous prime is 163894267. The next prime is 163894273. The reversal of 163894272 is 272498361.

It is a super-2 number, since 2×163894272² = 53722664788819968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163894273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94372 + ... + 96092.

Almost surely, 2^163894272 is an apocalyptic number.

163894272 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 163894272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225595776).

163894272 is an abundant number, since it is smaller than the sum of its proper divisors (287297280).

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

163894272 is a wasteful number, since it uses less digits than its factorization.

163894272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1757 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 163894272 is about 12802.1198244666. The cubic root of 163894272 is about 547.2527154166.

The spelling of 163894272 in words is "one hundred sixty-three million, eight hundred ninety-four thousand, two hundred seventy-two".