Base | Representation |
---|---|
bin | 111100101001000010100 |
3 | 10201221210000 |
4 | 13211020110 |
5 | 1002041332 |
6 | 110331300 |
7 | 22614162 |
oct | 7451024 |
9 | 3657700 |
10 | 1987092 |
11 | 1137a28 |
12 | 7b9b30 |
13 | 5475c3 |
14 | 39a232 |
15 | 293b7c |
hex | 1e5214 |
1987092 has 30 divisors (see below), whose sum is σ = 5195498. Its totient is φ = 662256.
The previous prime is 1987091. The next prime is 1987099. The reversal of 1987092 is 2907891.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 1971216 + 15876 = 1404^2 + 126^2 .
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 (1987091) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2743 + ... + 3390.
21987092 is an apocalyptic number.
1987092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
1987092 is an abundant number, since it is smaller than the sum of its proper divisors (3208406).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1987092 is a wasteful number, since it uses less digits than its factorization.
1987092 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6149 (or 6138 counting only the distinct ones).
The product of its (nonzero) digits is 9072, while the sum is 36.
The square root of 1987092 is about 1409.6425078721. The cubic root of 1987092 is about 125.7204687534.
The spelling of 1987092 in words is "one million, nine hundred eighty-seven thousand, ninety-two".
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