| Base | Representation |
|---|---|
| bin | 1010111001001… |
| … | …01011010001100 |
| 3 | 20100221112220000 |
| 4 | 11130211122030 |
| 5 | 141343114330 |
| 6 | 13022324300 |
| 7 | 2156466033 |
| oct | 534453214 |
| 9 | 210845800 |
| 10 | 91379340 |
| 11 | 47643718 |
| 12 | 26729690 |
| 13 | 15c15a20 |
| 14 | c1c971a |
| 15 | 8050560 |
| hex | 572568c |
91379340 has 120 divisors (see below), whose sum is σ = 308782320. Its totient is φ = 22488192.
The previous prime is 91379333. The next prime is 91379347. The reversal of 91379340 is 4397319.
It is an interprime number because it is at equal distance from previous prime (91379333) and next prime (91379347).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 91379295 and 91379304.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (91379347) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18891 + ... + 23229.
It is an arithmetic number, because the mean of its divisors is an integer number (2573186).
Almost surely, 291379340 is an apocalyptic number.
91379340 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 91379340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154391160).
91379340 is an abundant number, since it is smaller than the sum of its proper divisors (217402980).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
91379340 is a wasteful number, since it uses less digits than its factorization.
91379340 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4373 (or 4362 counting only the distinct ones).
The product of its (nonzero) digits is 20412, while the sum is 36.
The square root of 91379340 is about 9559.2541550060. The cubic root of 91379340 is about 450.4182777545.
It can be divided in two parts, 91379 and 340, that added together give a palindrome (91719).
The spelling of 91379340 in words is "ninety-one million, three hundred seventy-nine thousand, three hundred forty".
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