4591216 has 20 divisors (see below), whose sum is σ = 10166512. Its totient is φ = 1967616.

The previous prime is 4591211. The next prime is 4591267. The reversal of 4591216 is 6121954.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4591211) 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, 20385 + ... + 20608.

Almost surely, 2^4591216 is an apocalyptic number.

It is an amenable number.

4591216 is an abundant number, since it is smaller than the sum of its proper divisors (5575296).

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

4591216 is a wasteful number, since it uses less digits than its factorization.

4591216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41008 (or 41002 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 4591216 is about 2142.7122998667. The cubic root of 4591216 is about 166.2044222771.

The spelling of 4591216 in words is "four million, five hundred ninety-one thousand, two hundred sixteen".