91296040 has 32 divisors (see below), whose sum is σ = 224091360. Its totient is φ = 33198400.

The previous prime is 91296017. The next prime is 91296041. The reversal of 91296040 is 4069219.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 91295993 and 91296011.

It is not an unprimeable number, because it can be changed into a prime (91296041) 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, 103306 + ... + 104185.

It is an arithmetic number, because the mean of its divisors is an integer number (7002855).

Almost surely, 2^91296040 is an apocalyptic number.

It is an amenable number.

91296040 is an abundant number, since it is smaller than the sum of its proper divisors (132795320).

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

91296040 is a wasteful number, since it uses less digits than its factorization.

91296040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207513 (or 207509 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 91296040 is about 9554.8961271172. The cubic root of 91296040 is about 450.2813713555.

The spelling of 91296040 in words is "ninety-one million, two hundred ninety-six thousand, forty".