91414220 has 24 divisors (see below), whose sum is σ = 192223584. Its totient is φ = 36517376.

The previous prime is 91414199. The next prime is 91414223. The reversal of 91414220 is 2241419.

It is not an unprimeable number, because it can be changed into a prime (91414223) 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, 15164 + ... + 20316.

It is an arithmetic number, because the mean of its divisors is an integer number (8009316).

Almost surely, 2^91414220 is an apocalyptic number.

It is an amenable number.

91414220 is an abundant number, since it is smaller than the sum of its proper divisors (100809364).

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

91414220 is a wasteful number, since it uses less digits than its factorization.

91414220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049 (or 6047 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 91414220 is about 9561.0783910603. The cubic root of 91414220 is about 450.4755795144.

Adding to 91414220 its reverse (2241419), we get a palindrome (93655639).

The spelling of 91414220 in words is "ninety-one million, four hundred fourteen thousand, two hundred twenty".