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2812990 = 251716547
BaseRepresentation
bin1010101110110000111110
312021220200211
422232300332
51210003430
6140143034
732624065
oct12566076
95256624
102812990
111651494
12b37a7a
137764bb
145331dc
153a872a
hex2aec3e

2812990 has 16 divisors (see below), whose sum is σ = 5361552. Its totient is φ = 1058944.

The previous prime is 2812967. The next prime is 2812993. The reversal of 2812990 is 992182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2812993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8104 + ... + 8443.

It is an arithmetic number, because the mean of its divisors is an integer number (335097).

22812990 is an apocalyptic number.

2812990 is a deficient number, since it is larger than the sum of its proper divisors (2548562).

2812990 is a wasteful number, since it uses less digits than its factorization.

2812990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16571.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2812990 is about 1677.1970665369. The cubic root of 2812990 is about 141.1636013255.

The spelling of 2812990 in words is "two million, eight hundred twelve thousand, nine hundred ninety".

Divisors: 1 2 5 10 17 34 85 170 16547 33094 82735 165470 281299 562598 1406495 2812990