161371260 has 72 divisors (see below), whose sum is σ = 500900400. Its totient is φ = 42029568.

The previous prime is 161371253. The next prime is 161371261. The reversal of 161371260 is 62173161.

161371260 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 not an unprimeable number, because it can be changed into a prime (161371261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2685 + ... + 18164.

It is an arithmetic number, because the mean of its divisors is an integer number (6956950).

Almost surely, 2^161371260 is an apocalyptic number.

161371260 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 161371260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250450200).

161371260 is an abundant number, since it is smaller than the sum of its proper divisors (339529140).

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

161371260 is a wasteful number, since it uses less digits than its factorization.

161371260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20907 (or 20902 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 161371260 is about 12703.1988097487. The cubic root of 161371260 is about 544.4300188073.

The spelling of 161371260 in words is "one hundred sixty-one million, three hundred seventy-one thousand, two hundred sixty".