| Base | Representation |
|---|---|
| bin | 101111110011011… |
| … | …0010001011000100 |
| 3 | 11010210012202210000 |
| 4 | 1133212302023010 |
| 5 | 11241111040000 |
| 6 | 423055201300 |
| 7 | 54514540062 |
| oct | 13746621304 |
| 9 | 4123182700 |
| 10 | 1604002500 |
| 11 | 753465901 |
| 12 | 389216230 |
| 13 | 1c7407809 |
| 14 | 113057032 |
| 15 | 95c40000 |
| hex | 5f9b22c4 |
1604002500 has 225 divisors, whose sum is σ = 5299332577. Its totient is φ = 422928000.
The previous prime is 1604002489. The next prime is 1604002531. The reversal of 1604002500 is 52004061.
It is a happy number.
The square root of 1604002500 is 40050.
It is a perfect power (a square), and thus also a powerful number.
1604002500 is a `hidden beast` number, since 16 + 0 + 400 + 250 + 0 = 666.
1604002500 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 7 ways, for example, as 1558196676 + 45805824 = 39474^2 + 6768^2 .
It is a tau number, because it is divible by the number of its divisors (225).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 18022456 + ... + 18022544.
Almost surely, 21604002500 is an apocalyptic number.
1604002500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1604002500 is the 40050-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1604002500
1604002500 is an abundant number, since it is smaller than the sum of its proper divisors (3695330077).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1604002500 is an frugal number, since it uses more digits than its factorization.
1604002500 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 214 (or 99 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
The cubic root of 1604002500 is about 1170.5815649205.
Adding to 1604002500 its reverse (52004061), we get a palindrome (1656006561).
The spelling of 1604002500 in words is "one billion, six hundred four million, two thousand, five hundred".
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