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2989630 = 25742709
BaseRepresentation
bin1011011001111000111110
312121220000001
423121320332
51231132010
6144024514
734261060
oct13317076
95556001
102989630
111762176
12100213a
13808a17
1457b730
153e0c3a
hex2d9e3e

2989630 has 16 divisors (see below), whose sum is σ = 6150240. Its totient is φ = 1024992.

The previous prime is 2989621. The next prime is 2989633. The reversal of 2989630 is 369892.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2989630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21285 + ... + 21424.

It is an arithmetic number, because the mean of its divisors is an integer number (384390).

22989630 is an apocalyptic number.

2989630 is an abundant number, since it is smaller than the sum of its proper divisors (3160610).

2989630 is a wasteful number, since it uses less digits than its factorization.

2989630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42723.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2989630 is about 1729.0546550066. The cubic root of 2989630 is about 144.0585859863.

The spelling of 2989630 in words is "two million, nine hundred eighty-nine thousand, six hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 42709 85418 213545 298963 427090 597926 1494815 2989630