161272876 has 12 divisors (see below), whose sum is σ = 288791272. Its totient is φ = 78761088.

The previous prime is 161272847. The next prime is 161272877. The reversal of 161272876 is 678272161.

It is a super-2 number, since 2×161272876² = 52017881066622752, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161272877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468645 + ... + 468988.

Almost surely, 2^161272876 is an apocalyptic number.

It is an amenable number.

161272876 is a deficient number, since it is larger than the sum of its proper divisors (127518396).

161272876 is a wasteful number, since it uses less digits than its factorization.

161272876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937680 (or 937678 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 161272876 is about 12699.3258088766. The cubic root of 161272876 is about 544.3193545498.

The spelling of 161272876 in words is "one hundred sixty-one million, two hundred seventy-two thousand, eight hundred seventy-six".