91634120 has 32 divisors (see below), whose sum is σ = 208078200. Its totient is φ = 36315648.

The previous prime is 91634117. The next prime is 91634143. The reversal of 91634120 is 2143619.

It can be written as a sum of positive squares in 4 ways, for example, as 49928356 + 41705764 = 7066^2 + 6458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91634120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6149 + ... + 14868.

Almost surely, 2^91634120 is an apocalyptic number.

It is an amenable number.

91634120 is an abundant number, since it is smaller than the sum of its proper divisors (116444080).

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

91634120 is a wasteful number, since it uses less digits than its factorization.

91634120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21137 (or 21133 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 91634120 is about 9572.5712324328. The cubic root of 91634120 is about 450.8365016829.

Adding to 91634120 its reverse (2143619), we get a palindrome (93777739).

The spelling of 91634120 in words is "ninety-one million, six hundred thirty-four thousand, one hundred twenty".