163271240 has 32 divisors (see below), whose sum is σ = 400757760. Its totient is φ = 59371200.

The previous prime is 163271221. The next prime is 163271249. The reversal of 163271240 is 42172361.

It is a super-2 number, since 2×163271240² = 53314995622275200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163271249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185096 + ... + 185975.

It is an arithmetic number, because the mean of its divisors is an integer number (12523680).

Almost surely, 2^163271240 is an apocalyptic number.

163271240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163271240 is an abundant number, since it is smaller than the sum of its proper divisors (237486520).

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

163271240 is a wasteful number, since it uses less digits than its factorization.

163271240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371093 (or 371089 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 163271240 is about 12777.7634975766. The cubic root of 163271240 is about 546.5583879008.

The spelling of 163271240 in words is "one hundred sixty-three million, two hundred seventy-one thousand, two hundred forty".