| Base | Representation |
|---|---|
| bin | 101001110110110… |
| … | …0100111011010100 |
| 3 | 10121212201210100100 |
| 4 | 1103231210323110 |
| 5 | 10334020103120 |
| 6 | 351210214100 |
| 7 | 46542453555 |
| oct | 12355447324 |
| 9 | 3555653310 |
| 10 | 1404456660 |
| 11 | 660863092 |
| 12 | 332424330 |
| 13 | 194c7c159 |
| 14 | d475232c |
| 15 | 83475490 |
| hex | 53b64ed4 |
1404456660 has 144 divisors (see below), whose sum is σ = 4447956240. Its totient is φ = 358256640.
The previous prime is 1404456653. The next prime is 1404456667. The reversal of 1404456660 is 666544041.
It is an interprime number because it is at equal distance from previous prime (1404456653) and next prime (1404456667).
It can be written as a sum of positive squares in 8 ways, for example, as 670913604 + 733543056 = 25902^2 + 27084^2 .
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1404456667) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 588670 + ... + 591050.
It is an arithmetic number, because the mean of its divisors is an integer number (30888585).
Almost surely, 21404456660 is an apocalyptic number.
1404456660 is a gapful number since it is divisible by the number (10) 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 1404456660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2223978120).
1404456660 is an abundant number, since it is smaller than the sum of its proper divisors (3043499580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1404456660 is a wasteful number, since it uses less digits than its factorization.
1404456660 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2538 (or 2533 counting only the distinct ones).
The product of its (nonzero) digits is 69120, while the sum is 36.
The square root of 1404456660 is about 37476.0811718621. The cubic root of 1404456660 is about 1119.8747362033.
The spelling of 1404456660 in words is "one billion, four hundred four million, four hundred fifty-six thousand, six hundred sixty".
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