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2801930 = 251914747
BaseRepresentation
bin1010101100000100001010
312021100112012
422230010022
51204130210
6140015522
732546615
oct12540412
95240465
102801930
11164414a
12b315a2
13771461
1452d17c
153a5305
hex2ac10a

2801930 has 16 divisors (see below), whose sum is σ = 5309280. Its totient is φ = 1061712.

The previous prime is 2801927. The next prime is 2801941. The reversal of 2801930 is 391082.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2801896 and 2801905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7184 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (331830).

22801930 is an apocalyptic number.

2801930 is a deficient number, since it is larger than the sum of its proper divisors (2507350).

2801930 is a wasteful number, since it uses less digits than its factorization.

2801930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14773.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2801930 is about 1673.8966515290. The cubic root of 2801930 is about 140.9783512191.

The spelling of 2801930 in words is "two million, eight hundred one thousand, nine hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 14747 29494 73735 147470 280193 560386 1400965 2801930