32116891 has 4 divisors (see below), whose sum is σ = 33224400. Its totient is φ = 31009384.

The previous prime is 32116883. The next prime is 32116913. The reversal of 32116891 is 19861123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19861123 = 3889 ⋅5107.

It is a cyclic number.

It is not a de Polignac number, because 32116891 - 2³ = 32116883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32116811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553711 + ... + 553768.

It is an arithmetic number, because the mean of its divisors is an integer number (8306100).

Almost surely, 2^32116891 is an apocalyptic number.

32116891 is a deficient number, since it is larger than the sum of its proper divisors (1107509).

32116891 is a wasteful number, since it uses less digits than its factorization.

32116891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107508.

The product of its digits is 2592, while the sum is 31.

The square root of 32116891 is about 5667.1766339157. The cubic root of 32116891 is about 317.8663091891.

The spelling of 32116891 in words is "thirty-two million, one hundred sixteen thousand, eight hundred ninety-one".