161147072 has 28 divisors (see below), whose sum is σ = 322127880. Its totient is φ = 79981056.

The previous prime is 161147069. The next prime is 161147081. The reversal of 161147072 is 270741161.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422 + ... + 17957.

Almost surely, 2^161147072 is an apocalyptic number.

It is an amenable number.

161147072 is a deficient number, since it is larger than the sum of its proper divisors (160980808).

161147072 is a wasteful number, since it uses less digits than its factorization.

161147072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18528 (or 18518 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 161147072 is about 12694.3716662149. The cubic root of 161147072 is about 544.1777821473.

The spelling of 161147072 in words is "one hundred sixty-one million, one hundred forty-seven thousand, seventy-two".