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2884220 = 225172499
BaseRepresentation
bin1011000000001001111100
312102112101222
423000021330
51214243340
6141452512
733341543
oct13001174
95375358
102884220
11169aa59
12b71138
1379ca51
1455115a
153be8b5
hex2c027c

2884220 has 36 divisors (see below), whose sum is σ = 6447000. Its totient is φ = 1083648.

The previous prime is 2884201. The next prime is 2884229. The reversal of 2884220 is 224882.

It is a self number, because there is not a number n which added to its sum of digits gives 2884220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2884229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5531 + ... + 6029.

22884220 is an apocalyptic number.

2884220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2884220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3223500).

2884220 is an abundant number, since it is smaller than the sum of its proper divisors (3562780).

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

2884220 is a wasteful number, since it uses less digits than its factorization.

2884220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 2884220 is about 1698.2991491489. The cubic root of 2884220 is about 142.3451894221.

It can be divided in two parts, 28 and 84220, that added together give a palindrome (84248).

The spelling of 2884220 in words is "two million, eight hundred eighty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 289 340 499 578 998 1156 1445 1996 2495 2890 4990 5780 8483 9980 16966 33932 42415 84830 144211 169660 288422 576844 721055 1442110 2884220