161273080 has 16 divisors (see below), whose sum is σ = 362864520. Its totient is φ = 64509216.

The previous prime is 161273071. The next prime is 161273107. The reversal of 161273080 is 80372161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2015874 + ... + 2015953.

Almost surely, 2^161273080 is an apocalyptic number.

161273080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161273080 is an abundant number, since it is smaller than the sum of its proper divisors (201591440).

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

161273080 is a wasteful number, since it uses less digits than its factorization.

161273080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031838 (or 4031834 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 161273080 is about 12699.3338407965. Note that the first 3 decimals coincide. The cubic root of 161273080 is about 544.3195840595.

The spelling of 161273080 in words is "one hundred sixty-one million, two hundred seventy-three thousand, eighty".