161920480 has 48 divisors (see below), whose sum is σ = 391883184. Its totient is φ = 63185920.

The previous prime is 161920469. The next prime is 161920501. The reversal of 161920480 is 84029161.

It is a happy number.

161920480 is digitally balanced in base 2, 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 7 ways as a sum of consecutive naturals, for example, 5782 + ... + 18901.

It is an arithmetic number, because the mean of its divisors is an integer number (8164233).

Almost surely, 2^161920480 is an apocalyptic number.

161920480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161920480 is an abundant number, since it is smaller than the sum of its proper divisors (229962704).

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

161920480 is a wasteful number, since it uses less digits than its factorization.

161920480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24739 (or 24731 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 161920480 is about 12724.7978372939. The cubic root of 161920480 is about 545.0469673071.

The spelling of 161920480 in words is "one hundred sixty-one million, nine hundred twenty thousand, four hundred eighty".