91194880 has 120 divisors (see below), whose sum is σ = 254702448. Its totient is φ = 31223808.

The previous prime is 91194871. The next prime is 91194893. The reversal of 91194880 is 8849119.

It is a super-2 number, since 2×91194880² = 16633012276428800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125077 + ... + 125803.

Almost surely, 2^91194880 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 91194880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127351224).

91194880 is an abundant number, since it is smaller than the sum of its proper divisors (163507568).

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

91194880 is an equidigital number, since it uses as much as digits as its factorization.

91194880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 91194880 is about 9549.6010387869. The cubic root of 91194880 is about 450.1149994155.

The spelling of 91194880 in words is "ninety-one million, one hundred ninety-four thousand, eight hundred eighty".