91941120 has 216 divisors, whose sum is σ = 332894016. Its totient is φ = 23384064.

The previous prime is 91941119. The next prime is 91941121. The reversal of 91941120 is 2114919.

It is an interprime number because it is at equal distance from previous prime (91941119) and next prime (91941121).

It is not an unprimeable number, because it can be changed into a prime (91941121) 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, 264787 + ... + 265133.

It is an arithmetic number, because the mean of its divisors is an integer number (1541176).

Almost surely, 2^91941120 is an apocalyptic number.

91941120 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91941120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166447008).

91941120 is an abundant number, since it is smaller than the sum of its proper divisors (240952896).

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

91941120 is a wasteful number, since it uses less digits than its factorization.

91941120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 91941120 is about 9588.5932232002. The cubic root of 91941120 is about 451.3394167028.

The spelling of 91941120 in words is "ninety-one million, nine hundred forty-one thousand, one hundred twenty".