91836216 has 24 divisors (see below), whose sum is σ = 248723280. Its totient is φ = 30612048.

The previous prime is 91836211. The next prime is 91836221. The reversal of 91836216 is 61263819.

It is an interprime number because it is at equal distance from previous prime (91836211) and next prime (91836221).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91836211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 637680 + ... + 637823.

It is an arithmetic number, because the mean of its divisors is an integer number (10363470).

Almost surely, 2^91836216 is an apocalyptic number.

It is an amenable number.

91836216 is an abundant number, since it is smaller than the sum of its proper divisors (156887064).

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

91836216 is a wasteful number, since it uses less digits than its factorization.

91836216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275515 (or 1275508 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 91836216 is about 9583.1214121496. The cubic root of 91836216 is about 451.1676932882.

The spelling of 91836216 in words is "ninety-one million, eight hundred thirty-six thousand, two hundred sixteen".