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228120202 = 2809140989
BaseRepresentation
bin11011001100011…
…01011010001010
3120220020201002101
431212031122022
5431344321302
634345224014
75436663322
oct1546153212
9526221071
10228120202
1110784a0a2
126449200a
133835178b
1422422282
1515061287
hexd98d68a

228120202 has 8 divisors (see below), whose sum is σ = 342605700. Its totient is φ = 113918304.

The previous prime is 228120199. The next prime is 228120239. The reversal of 228120202 is 202021822.

228120202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220552201 + 7568001 = 14851^2 + 2751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 228120202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68877 + ... + 72112.

Almost surely, 2228120202 is an apocalyptic number.

228120202 is a deficient number, since it is larger than the sum of its proper divisors (114485498).

228120202 is a wasteful number, since it uses less digits than its factorization.

228120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141800.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 228120202 is about 15103.6486320359. The cubic root of 228120202 is about 611.0188134351.

The spelling of 228120202 in words is "two hundred twenty-eight million, one hundred twenty thousand, two hundred two".

Divisors: 1 2 809 1618 140989 281978 114060101 228120202