91420160 has 160 divisors (see below), whose sum is σ = 245421792. Its totient is φ = 32440320.

The previous prime is 91420159. The next prime is 91420207. The reversal of 91420160 is 6102419.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

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, 1364447 + ... + 1364513.

Almost surely, 2^91420160 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 91420160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122710896).

91420160 is an abundant number, since it is smaller than the sum of its proper divisors (154001632).

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

91420160 is a wasteful number, since it uses less digits than its factorization.

91420160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 91420160 is about 9561.3890204300. The cubic root of 91420160 is about 450.4853364464.

Adding to 91420160 its reverse (6102419), we get a palindrome (97522579).

The spelling of 91420160 in words is "ninety-one million, four hundred twenty thousand, one hundred sixty".