91072460 has 12 divisors (see below), whose sum is σ = 191252208. Its totient is φ = 36428976.

The previous prime is 91072447. The next prime is 91072469. The reversal of 91072460 is 6427019.

It is not an unprimeable number, because it can be changed into a prime (91072469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276792 + ... + 2276831.

It is an arithmetic number, because the mean of its divisors is an integer number (15937684).

Almost surely, 2^91072460 is an apocalyptic number.

It is an amenable number.

91072460 is an abundant number, since it is smaller than the sum of its proper divisors (100179748).

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

91072460 is a wasteful number, since it uses less digits than its factorization.

91072460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553632 (or 4553630 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 91072460 is about 9543.1891943941. The cubic root of 91072460 is about 449.9134977763.

Adding to 91072460 its reverse (6427019), we get a palindrome (97499479).

The spelling of 91072460 in words is "ninety-one million, seventy-two thousand, four hundred sixty".