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228177148 = 22272920903
BaseRepresentation
bin11011001100110…
…11010011111100
3120220100121012111
431212123103330
5431403132043
634350343404
75440321333
oct1546332374
9526317174
10228177148
11107888961
12644bab64
1338371684
1422438d1a
151507309d
hexd99b4fc

228177148 has 12 divisors (see below), whose sum is σ = 399475440. Its totient is φ = 114041312.

The previous prime is 228177121. The next prime is 228177161. The reversal of 228177148 is 841771822.

It is a self number, because there is not a number n which added to its sum of digits gives 228177148.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465 + ... + 21367.

It is an arithmetic number, because the mean of its divisors is an integer number (33289620).

Almost surely, 2228177148 is an apocalyptic number.

It is an amenable number.

228177148 is a deficient number, since it is larger than the sum of its proper divisors (171298292).

228177148 is a wasteful number, since it uses less digits than its factorization.

228177148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23636 (or 23634 counting only the distinct ones).

The product of its digits is 50176, while the sum is 40.

The square root of 228177148 is about 15105.5336880231. The cubic root of 228177148 is about 611.0696523965.

The spelling of 228177148 in words is "two hundred twenty-eight million, one hundred seventy-seven thousand, one hundred forty-eight".

Divisors: 1 2 4 2729 5458 10916 20903 41806 83612 57044287 114088574 228177148