91227822 has 16 divisors (see below), whose sum is σ = 208520832. Its totient is φ = 26065080.

The previous prime is 91227817. The next prime is 91227827. The reversal of 91227822 is 22872219.

It is an interprime number because it is at equal distance from previous prime (91227817) and next prime (91227827).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91227827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086004 + ... + 1086087.

It is an arithmetic number, because the mean of its divisors is an integer number (13032552).

Almost surely, 2^91227822 is an apocalyptic number.

91227822 is an abundant number, since it is smaller than the sum of its proper divisors (117293010).

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

91227822 is a wasteful number, since it uses less digits than its factorization.

91227822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172103.

The product of its digits is 8064, while the sum is 33.

The square root of 91227822 is about 9551.3256671522. The cubic root of 91227822 is about 450.1691907008.

The spelling of 91227822 in words is "ninety-one million, two hundred twenty-seven thousand, eight hundred twenty-two".