91645248 has 56 divisors (see below), whose sum is σ = 253032768. Its totient is φ = 29218816.

The previous prime is 91645247. The next prime is 91645259. The reversal of 91645248 is 84254619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91645247) 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, 5961 + ... + 14792.

Almost surely, 2^91645248 is an apocalyptic number.

It is an amenable number.

91645248 is an abundant number, since it is smaller than the sum of its proper divisors (161387520).

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

91645248 is a wasteful number, since it uses less digits than its factorization.

91645248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20791 (or 20781 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 91645248 is about 9573.1524588298. The cubic root of 91645248 is about 450.8547507278.

It can be divided in two parts, 916 and 45248, that added together give a palindrome (46164).

The spelling of 91645248 in words is "ninety-one million, six hundred forty-five thousand, two hundred forty-eight".