91422260 has 36 divisors (see below), whose sum is σ = 203957292. Its totient is φ = 34415616.

The previous prime is 91422241. The next prime is 91422283. The reversal of 91422260 is 6222419.

It can be written as a sum of positive squares in 6 ways, for example, as 17255716 + 74166544 = 4154^2 + 8612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2129 + ... + 13688.

Almost surely, 2^91422260 is an apocalyptic number.

It is an amenable number.

91422260 is an abundant number, since it is smaller than the sum of its proper divisors (112535032).

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

91422260 is a wasteful number, since it uses less digits than its factorization.

91422260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15860 (or 15841 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 91422260 is about 9561.4988364796. The cubic root of 91422260 is about 450.4887857657.

Adding to 91422260 its reverse (6222419), we get a palindrome (97644679).

The spelling of 91422260 in words is "ninety-one million, four hundred twenty-two thousand, two hundred sixty".