23491116 has 72 divisors (see below), whose sum is σ = 65402064. Its totient is φ = 7050240.

The previous prime is 23491109. The next prime is 23491121. The reversal of 23491116 is 61119432.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23491116.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54036 + ... + 54468.

It is an arithmetic number, because the mean of its divisors is an integer number (908362).

Almost surely, 2^23491116 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 23491116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32701032).

23491116 is an abundant number, since it is smaller than the sum of its proper divisors (41910948).

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

23491116 is a wasteful number, since it uses less digits than its factorization.

23491116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 586 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 23491116 is about 4846.7634561633. The cubic root of 23491116 is about 286.3966166647.

The spelling of 23491116 in words is "twenty-three million, four hundred ninety-one thousand, one hundred sixteen".