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2805030 = 23453463
BaseRepresentation
bin1010101100110100100110
312021111210000
422230310212
51204230110
6140042130
732561634
oct12546446
95244700
102805030
111646508
12b33346
137729a7
14530354
153a61c0
hex2acd26

2805030 has 40 divisors (see below), whose sum is σ = 7544592. Its totient is φ = 747792.

The previous prime is 2805001. The next prime is 2805031. The reversal of 2805030 is 305082.

2805030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2804994 and 2805012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 922 + ... + 2541.

22805030 is an apocalyptic number.

2805030 is an abundant number, since it is smaller than the sum of its proper divisors (4739562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2805030 is a wasteful number, since it uses less digits than its factorization.

2805030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2805030 is about 1674.8223786420. The cubic root of 2805030 is about 141.0303239442.

The spelling of 2805030 in words is "two million, eight hundred five thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 810 3463 6926 10389 17315 20778 31167 34630 51945 62334 93501 103890 155835 187002 280503 311670 467505 561006 935010 1402515 2805030