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4222881 = 331353227
BaseRepresentation
bin10000000110111110100001
321221112201000
4100012332201
52040113011
6230302213
750615415
oct20067641
97845630
104222881
112424793
1214b7969
13b4b160
147bcd45
15586356
hex406fa1

4222881 has 32 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 2538432.

The previous prime is 4222871. The next prime is 4222909. The reversal of 4222881 is 1882224.

It is not a de Polignac number, because 4222881 - 25 = 4222849 is a prime.

It is a super-2 number, since 2×42228812 = 35665447880322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4222811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18490 + ... + 18716.

It is an arithmetic number, because the mean of its divisors is an integer number (215460).

Almost surely, 24222881 is an apocalyptic number.

It is an amenable number.

4222881 is a deficient number, since it is larger than the sum of its proper divisors (2671839).

4222881 is a wasteful number, since it uses less digits than its factorization.

4222881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 296 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 4222881 is about 2054.9649632050. The cubic root of 4222881 is about 161.6353251084.

The spelling of 4222881 in words is "four million, two hundred twenty-two thousand, eight hundred eighty-one".

Divisors: 1 3 9 13 27 39 53 117 159 227 351 477 681 689 1431 2043 2067 2951 6129 6201 8853 12031 18603 26559 36093 79677 108279 156403 324837 469209 1407627 4222881