91026416 has 80 divisors (see below), whose sum is σ = 206653440. Its totient is φ = 38465280.

The previous prime is 91026409. The next prime is 91026427. The reversal of 91026416 is 61462019.

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, 122141 + ... + 122883.

It is an arithmetic number, because the mean of its divisors is an integer number (2583168).

Almost surely, 2^91026416 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 91026416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103326720).

91026416 is an abundant number, since it is smaller than the sum of its proper divisors (115627024).

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

91026416 is a wasteful number, since it uses less digits than its factorization.

91026416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 91026416 is about 9540.7764883158. The cubic root of 91026416 is about 449.8376632550.

The spelling of 91026416 in words is "ninety-one million, twenty-six thousand, four hundred sixteen".