91484920 has 32 divisors (see below), whose sum is σ = 208746720. Its totient is φ = 36077440.

The previous prime is 91484917. The next prime is 91484927. The reversal of 91484920 is 2948419.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91484920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91484927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13267 + ... + 18946.

It is an arithmetic number, because the mean of its divisors is an integer number (6523335).

Almost surely, 2^91484920 is an apocalyptic number.

It is an amenable number.

91484920 is an abundant number, since it is smaller than the sum of its proper divisors (117261800).

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

91484920 is a wasteful number, since it uses less digits than its factorization.

91484920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32295 (or 32291 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 91484920 is about 9564.7749581472. The cubic root of 91484920 is about 450.5916825904.

The spelling of 91484920 in words is "ninety-one million, four hundred eighty-four thousand, nine hundred twenty".