91416078 has 48 divisors (see below), whose sum is σ = 214368336. Its totient is φ = 27987840.

The previous prime is 91416071. The next prime is 91416079. The reversal of 91416078 is 87061419.

91416078 is a `hidden beast` number, since 9 + 1 + 41 + 607 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91416071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52258 + ... + 53978.

It is an arithmetic number, because the mean of its divisors is an integer number (4466007).

Almost surely, 2^91416078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91416078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107184168).

91416078 is an abundant number, since it is smaller than the sum of its proper divisors (122952258).

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

91416078 is a wasteful number, since it uses less digits than its factorization.

91416078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 91416078 is about 9561.1755553384. The cubic root of 91416078 is about 450.4786314756.

The spelling of 91416078 in words is "ninety-one million, four hundred sixteen thousand, seventy-eight".