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2202228 = 22347971
BaseRepresentation
bin1000011001101001110100
311010212220000
420121221310
51030432403
6115111300
724501330
oct10315164
94125800
102202228
111274626
128a2530
135c14c2
144147c0
152d77a3
hex219a74

2202228 has 60 divisors (see below), whose sum is σ = 6586272. Its totient is φ = 628560.

The previous prime is 2202169. The next prime is 2202253. The reversal of 2202228 is 8222022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2202228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1783 + ... + 2753.

22202228 is an apocalyptic number.

2202228 is a gapful number since it is divisible by the number (28) 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 2202228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3293136).

2202228 is an abundant number, since it is smaller than the sum of its proper divisors (4384044).

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

2202228 is a wasteful number, since it uses less digits than its factorization.

2202228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2202228 is about 1483.9905660077. The cubic root of 2202228 is about 130.1030346866.

It can be divided in two parts, 22022 and 28, that multiplied together give a palindrome (616616).

The spelling of 2202228 in words is "two million, two hundred two thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 81 84 108 126 162 189 252 324 378 567 756 971 1134 1942 2268 2913 3884 5826 6797 8739 11652 13594 17478 20391 26217 27188 34956 40782 52434 61173 78651 81564 104868 122346 157302 183519 244692 314604 367038 550557 734076 1101114 2202228