| Base | Representation |
|---|---|
| bin | 1000111010100… |
| … | …00100101101000 |
| 3 | 12012201011111000 |
| 4 | 10131100211220 |
| 5 | 123120411414 |
| 6 | 11230435000 |
| 7 | 1565416350 |
| oct | 435204550 |
| 9 | 165634430 |
| 10 | 74778984 |
| 11 | 39235615 |
| 12 | 21062a60 |
| 13 | 12652b27 |
| 14 | 9d07b60 |
| 15 | 6871b09 |
| hex | 4750968 |
74778984 has 192 divisors, whose sum is σ = 252374400. Its totient is φ = 20093184.
The previous prime is 74778973. The next prime is 74778989. The reversal of 74778984 is 48987747.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a nude number because it is divisible by every one of its digits.
Its product of digits (3161088) is a multiple of the sum of its prime divisors (168).
It is a self number, because there is not a number n which added to its sum of digits gives 74778984.
It is not an unprimeable number, because it can be changed into a prime (74778989) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 545764 + ... + 545900.
It is an arithmetic number, because the mean of its divisors is an integer number (1314450).
Almost surely, 274778984 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 74778984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126187200).
74778984 is an abundant number, since it is smaller than the sum of its proper divisors (177595416).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
74778984 is a wasteful number, since it uses less digits than its factorization.
74778984 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 197 (or 168 counting only the distinct ones).
The product of its digits is 3161088, while the sum is 54.
The square root of 74778984 is about 8647.4842584419. The cubic root of 74778984 is about 421.3016759271.
It can be divided in two parts, 7477 and 8984, that added together give a palindrome (16461).
The spelling of 74778984 in words is "seventy-four million, seven hundred seventy-eight thousand, nine hundred eighty-four".
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