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2228888 = 23278611
BaseRepresentation
bin1000100000001010011000
311012020110102
420200022120
51032311023
6115434532
724642134
oct10401230
94166412
102228888
111292662
128b5a48
1360068c
144203c4
152e0628
hex220298

2228888 has 8 divisors (see below), whose sum is σ = 4179180. Its totient is φ = 1114440.

The previous prime is 2228867. The next prime is 2228893. The reversal of 2228888 is 8888222.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 27 + 217 + 221 + 8 + 8 + 8 + 83 .

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139298 + ... + 139313.

22228888 is an apocalyptic number.

It is an amenable number.

2228888 is a deficient number, since it is larger than the sum of its proper divisors (1950292).

2228888 is a wasteful number, since it uses less digits than its factorization.

2228888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278617 (or 278613 counting only the distinct ones).

The product of its digits is 32768, while the sum is 38.

The square root of 2228888 is about 1492.9460807410. The cubic root of 2228888 is about 130.6259359838.

It can be divided in two parts, 22 and 28888, that multiplied together give a palindrome (635536).

The spelling of 2228888 in words is "two million, two hundred twenty-eight thousand, eight hundred eighty-eight".

Divisors: 1 2 4 8 278611 557222 1114444 2228888