161200270 has 64 divisors (see below), whose sum is σ = 374284800. Its totient is φ = 48504960.

The previous prime is 161200223. The next prime is 161200297. The reversal of 161200270 is 72002161.

161200270 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18721 + ... + 25939.

It is an arithmetic number, because the mean of its divisors is an integer number (5848200).

Almost surely, 2^161200270 is an apocalyptic number.

161200270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161200270 is an abundant number, since it is smaller than the sum of its proper divisors (213084530).

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

161200270 is a wasteful number, since it uses less digits than its factorization.

161200270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7273.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 161200270 is about 12696.4668313669. The cubic root of 161200270 is about 544.2376570270.

The spelling of 161200270 in words is "one hundred sixty-one million, two hundred thousand, two hundred seventy".