| Base | Representation |
|---|---|
| bin | 101111110100100… |
| … | …1101110110000100 |
| 3 | 11010211102011110000 |
| 4 | 1133221031312010 |
| 5 | 11241241441012 |
| 6 | 423121001300 |
| 7 | 54523134054 |
| oct | 13751156604 |
| 9 | 4124364400 |
| 10 | 1604640132 |
| 11 | 753860977 |
| 12 | 389483230 |
| 13 | 1c759bb04 |
| 14 | 113181564 |
| 15 | 95d18ddc |
| hex | 5fa4dd84 |
1604640132 has 90 divisors (see below), whose sum is σ = 4456377002. Its totient is φ = 503387136.
The previous prime is 1604640077. The next prime is 1604640133. The reversal of 1604640132 is 2310464061.
1604640132 is a `hidden beast` number, since 1 + 6 + 0 + 4 + 640 + 13 + 2 = 666.
It can be written as a sum of positive squares in 3 ways, for example, as 171714816 + 1432925316 = 13104^2 + 37854^2 .
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a junction number, because it is equal to n+sod(n) for n = 1604640096 and 1604640105.
It is not an unprimeable number, because it can be changed into a prime (1604640133) 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 29 ways as a sum of consecutive naturals, for example, 85068 + ... + 102204.
Almost surely, 21604640132 is an apocalyptic number.
1604640132 is a gapful number since it is divisible by the number (12) 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 1604640132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2228188501).
1604640132 is an abundant number, since it is smaller than the sum of its proper divisors (2851736870).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1604640132 is a wasteful number, since it uses less digits than its factorization.
1604640132 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17187 (or 17159 counting only the distinct ones).
The product of its (nonzero) digits is 3456, while the sum is 27.
The square root of 1604640132 is about 40057.9596584749. The cubic root of 1604640132 is about 1170.7366564040.
The spelling of 1604640132 in words is "one billion, six hundred four million, six hundred forty thousand, one hundred thirty-two".
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