91622148 has 12 divisors (see below), whose sum is σ = 213785040. Its totient is φ = 30540712.

The previous prime is 91622147. The next prime is 91622149. The reversal of 91622148 is 84122619.

It is an interprime number because it is at equal distance from previous prime (91622147) and next prime (91622149).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (91622147) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3817578 + ... + 3817601.

It is an arithmetic number, because the mean of its divisors is an integer number (17815420).

Almost surely, 2^91622148 is an apocalyptic number.

It is an amenable number.

91622148 is an abundant number, since it is smaller than the sum of its proper divisors (122162892).

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

91622148 is a wasteful number, since it uses less digits than its factorization.

91622148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635186 (or 7635184 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 91622148 is about 9571.9458836749. The cubic root of 91622148 is about 450.8168668944.

The spelling of 91622148 in words is "ninety-one million, six hundred twenty-two thousand, one hundred forty-eight".