291016 has 16 divisors (see below), whose sum is σ = 595440. Its totient is φ = 132240.

The previous prime is 291013. The next prime is 291037. The reversal of 291016 is 610192.

It is a junction number, because it is equal to n+sod(n) for n = 290984 and 291002.

It is not an unprimeable number, because it can be changed into a prime (291013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (37215).

2²⁹¹⁰¹⁶ is an apocalyptic number.

It is an amenable number.

291016 is an abundant number, since it is smaller than the sum of its proper divisors (304424).

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

291016 is a wasteful number, since it uses less digits than its factorization.

291016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324 (or 3320 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 291016 is about 539.4589882466. The cubic root of 291016 is about 66.2682683690.

It can be divided in two parts, 2910 and 16, that added together give a triangular number (2926 = T₇₆).

The spelling of 291016 in words is "two hundred ninety-one thousand, sixteen".