161508480 has 256 divisors, whose sum is σ = 601032960. Its totient is φ = 36126720.

The previous prime is 161508467. The next prime is 161508499. The reversal of 161508480 is 84805161.

It is a super-2 number, since 2×161508480² = 52169978223820800, which contains 22 as substring.

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, 819742 + ... + 819938.

It is an arithmetic number, because the mean of its divisors is an integer number (2347785).

Almost surely, 2^161508480 is an apocalyptic number.

161508480 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 161508480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300516480).

161508480 is an abundant number, since it is smaller than the sum of its proper divisors (439524480).

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

161508480 is a wasteful number, since it uses less digits than its factorization.

161508480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 161508480 is about 12708.5986638968. The cubic root of 161508480 is about 544.5842914700.

The spelling of 161508480 in words is "one hundred sixty-one million, five hundred eight thousand, four hundred eighty".