91268238 has 16 divisors (see below), whose sum is σ = 183189456. Its totient is φ = 30313920.

The previous prime is 91268201. The next prime is 91268239. The reversal of 91268238 is 83286219.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 91268196 and 91268205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91268239) 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, 25381 + ... + 28752.

It is an arithmetic number, because the mean of its divisors is an integer number (11449341).

Almost surely, 2^91268238 is an apocalyptic number.

91268238 is an abundant number, since it is smaller than the sum of its proper divisors (91921218).

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

91268238 is a wasteful number, since it uses less digits than its factorization.

91268238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54419.

The product of its digits is 41472, while the sum is 39.

The square root of 91268238 is about 9553.4411601265. The cubic root of 91268238 is about 450.2356592827.

The spelling of 91268238 in words is "ninety-one million, two hundred sixty-eight thousand, two hundred thirty-eight".