Base | Representation |
---|---|
bin | 1010011000000100101000 |
3 | 12010012012020 |
4 | 22120010220 |
5 | 1144020130 |
6 | 134144440 |
7 | 32056101 |
oct | 12300450 |
9 | 5105166 |
10 | 2720040 |
11 | 1598674 |
12 | ab2120 |
13 | 7430bb |
14 | 50b3a8 |
15 | 38ae10 |
hex | 298128 |
2720040 has 64 divisors (see below), whose sum is σ = 8596800. Its totient is φ = 686592.
The previous prime is 2720009. The next prime is 2720071. The reversal of 2720040 is 400272.
It is an interprime number because it is at equal distance from previous prime (2720009) and next prime (2720071).
It is a Harshad number since it is a multiple of its sum of digits (15).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1684 + ... + 2876.
It is an arithmetic number, because the mean of its divisors is an integer number (134325).
22720040 is an apocalyptic number.
2720040 is a gapful number since it is divisible by the number (20) 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 2720040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4298400).
2720040 is an abundant number, since it is smaller than the sum of its proper divisors (5876760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2720040 is a wasteful number, since it uses less digits than its factorization.
2720040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1226 (or 1222 counting only the distinct ones).
The product of its (nonzero) digits is 112, while the sum is 15.
The square root of 2720040 is about 1649.2543769837. The cubic root of 2720040 is about 139.5913252027.
The spelling of 2720040 in words is "two million, seven hundred twenty thousand, forty".
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