291896016 has 80 divisors (see below), whose sum is σ = 773789760. Its totient is φ = 94781440.

The previous prime is 291895987. The next prime is 291896021. The reversal of 291896016 is 610698192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455056 + ... + 455696.

It is an arithmetic number, because the mean of its divisors is an integer number (9672372).

Almost surely, 2^291896016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291896016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386894880).

291896016 is an abundant number, since it is smaller than the sum of its proper divisors (481893744).

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

291896016 is a wasteful number, since it uses less digits than its factorization.

291896016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 291896016 is about 17084.9646180494. The cubic root of 291896016 is about 663.3499832245.

The spelling of 291896016 in words is "two hundred ninety-one million, eight hundred ninety-six thousand, sixteen".