Base | Representation |
---|---|
bin | 1011010101101000011110 |
3 | 12121000002010 |
4 | 23111220132 |
5 | 1230102230 |
6 | 143412050 |
7 | 34156164 |
oct | 13255036 |
9 | 5530063 |
10 | 2972190 |
11 | 1750061 |
12 | bb4026 |
13 | 800ac0 |
14 | 575234 |
15 | 3da9b0 |
hex | 2d5a1e |
2972190 has 32 divisors (see below), whose sum is σ = 7682976. Its totient is φ = 731520.
The previous prime is 2972183. The next prime is 2972197. The reversal of 2972190 is 912792.
It is an interprime number because it is at equal distance from previous prime (2972183) and next prime (2972197).
It is a super-2 number, since 2×29721902 = 17667826792200, which contains 22 as substring.
It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2972197) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3421 + ... + 4200.
It is an arithmetic number, because the mean of its divisors is an integer number (240093).
22972190 is an apocalyptic number.
2972190 is an abundant number, since it is smaller than the sum of its proper divisors (4710786).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2972190 is a wasteful number, since it uses less digits than its factorization.
2972190 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7644.
The product of its (nonzero) digits is 2268, while the sum is 30.
The square root of 2972190 is about 1724.0040603200. The cubic root of 2972190 is about 143.7779177031. Note that the first 3 decimals are identical.
The spelling of 2972190 in words is "two million, nine hundred seventy-two thousand, one hundred ninety".
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