Base | Representation |
---|---|
bin | 1011011001011011100100 |
3 | 12121210102100 |
4 | 23121123210 |
5 | 1231101443 |
6 | 144012100 |
7 | 34252431 |
oct | 13313344 |
9 | 5553370 |
10 | 2987748 |
11 | 1760815 |
12 | 1001030 |
13 | 807bca |
14 | 57ab88 |
15 | 3e03d3 |
hex | 2d96e4 |
2987748 has 36 divisors (see below), whose sum is σ = 7616700. Its totient is φ = 987456.
The previous prime is 2987737. The next prime is 2987753. The reversal of 2987748 is 8477892.
It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 2683044 = 552^2 + 1638^2 .
It is a tau number, because it is divible by the number of its divisors (36).
It is a super-2 number, since 2×29877482 = 17853276223008, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5086 + ... + 5642.
It is an arithmetic number, because the mean of its divisors is an integer number (211575).
22987748 is an apocalyptic number.
It is an amenable number.
2987748 is an abundant number, since it is smaller than the sum of its proper divisors (4628952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2987748 is a wasteful number, since it uses less digits than its factorization.
2987748 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 716 (or 711 counting only the distinct ones).
The product of its digits is 225792, while the sum is 45.
The square root of 2987748 is about 1728.5103413055. The cubic root of 2987748 is about 144.0283508994.
The spelling of 2987748 in words is "two million, nine hundred eighty-seven thousand, seven hundred forty-eight".
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