161672412 has 48 divisors (see below), whose sum is σ = 413183232. Its totient is φ = 48794880.

The previous prime is 161672393. The next prime is 161672453. The reversal of 161672412 is 214276161.

161672412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161672412² = 52275937603795488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161672412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32388 + ... + 37044.

It is an arithmetic number, because the mean of its divisors is an integer number (8607984).

Almost surely, 2^161672412 is an apocalyptic number.

161672412 is a gapful number since it is divisible by the number (12) 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 161672412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206591616).

161672412 is an abundant number, since it is smaller than the sum of its proper divisors (251510820).

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

161672412 is a wasteful number, since it uses less digits than its factorization.

161672412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938 (or 4936 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 161672412 is about 12715.0466770673. The cubic root of 161672412 is about 544.7684811883.

The spelling of 161672412 in words is "one hundred sixty-one million, six hundred seventy-two thousand, four hundred twelve".