161276 has 12 divisors (see below), whose sum is σ = 294672. Its totient is φ = 77088.

The previous prime is 161267. The next prime is 161281. The reversal of 161276 is 672161.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

161276 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785 + ... + 968.

It is an arithmetic number, because the mean of its divisors is an integer number (24556).

2¹⁶¹²⁷⁶ is an apocalyptic number.

It is an amenable number.

161276 is a deficient number, since it is larger than the sum of its proper divisors (133396).

161276 is a wasteful number, since it uses less digits than its factorization.

161276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1778 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 161276 is about 401.5918325863. The cubic root of 161276 is about 54.4322869178.

The spelling of 161276 in words is "one hundred sixty-one thousand, two hundred seventy-six".