161612480 has 84 divisors (see below), whose sum is σ = 406450800. Its totient is φ = 61198848.

The previous prime is 161612449. The next prime is 161612483. The reversal of 161612480 is 84216161.

It is a super-2 number, since 2×161612480² = 52237187383500800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161612483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114821 + ... + 116219.

It is an arithmetic number, because the mean of its divisors is an integer number (4838700).

Almost surely, 2^161612480 is an apocalyptic number.

161612480 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 161612480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203225400).

161612480 is an abundant number, since it is smaller than the sum of its proper divisors (244838320).

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

161612480 is a wasteful number, since it uses less digits than its factorization.

161612480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 161612480 is about 12712.6897232647. The cubic root of 161612480 is about 544.7011576019.

The spelling of 161612480 in words is "one hundred sixty-one million, six hundred twelve thousand, four hundred eighty".