161432244 has 24 divisors (see below), whose sum is σ = 418528320. Its totient is φ = 53810712.

The previous prime is 161432231. The next prime is 161432251. The reversal of 161432244 is 442234161.

It is a happy number.

161432244 is a `hidden beast` number, since 1 + 614 + 3 + 2 + 2 + 44 = 666.

161432244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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, 747264 + ... + 747479.

It is an arithmetic number, because the mean of its divisors is an integer number (17438680).

Almost surely, 2^161432244 is an apocalyptic number.

It is an amenable number.

161432244 is an abundant number, since it is smaller than the sum of its proper divisors (257096076).

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

161432244 is a wasteful number, since it uses less digits than its factorization.

161432244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494756 (or 1494748 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 161432244 is about 12705.5989233094. The cubic root of 161432244 is about 544.4985922297.

The spelling of 161432244 in words is "one hundred sixty-one million, four hundred thirty-two thousand, two hundred forty-four".