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2874861 = 321171409
BaseRepresentation
bin1010111101110111101101
312102001120100
422331313231
51213443421
6141341313
733302343
oct12756755
95361510
102874861
111693a20
12b67839
13798702
1454b993
153bbc26
hex2bdded

2874861 has 24 divisors (see below), whose sum is σ = 4605120. Its totient is φ = 1713600.

The previous prime is 2874841. The next prime is 2874877. The reversal of 2874861 is 1684782.

It is not a de Polignac number, because 2874861 - 25 = 2874829 is a prime.

2874861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2874811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6825 + ... + 7233.

It is an arithmetic number, because the mean of its divisors is an integer number (191880).

22874861 is an apocalyptic number.

It is an amenable number.

2874861 is a deficient number, since it is larger than the sum of its proper divisors (1730259).

2874861 is a wasteful number, since it uses less digits than its factorization.

2874861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 494 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 2874861 is about 1695.5415064221. The cubic root of 2874861 is about 142.1910573759.

The spelling of 2874861 in words is "two million, eight hundred seventy-four thousand, eight hundred sixty-one".

Divisors: 1 3 9 11 33 71 99 213 409 639 781 1227 2343 3681 4499 7029 13497 29039 40491 87117 261351 319429 958287 2874861