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288902 = 2144451
BaseRepresentation
bin1000110100010000110
3112200022002
41012202012
533221102
610105302
72312165
oct1064206
9480262
10288902
11188069
1211b232
13a1663
14773dc
155a902
hex46886

288902 has 4 divisors (see below), whose sum is σ = 433356. Its totient is φ = 144450.

The previous prime is 288877. The next prime is 288907. The reversal of 288902 is 209882.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288907) by changing a digit.

288902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72224 + ... + 72227.

It is an arithmetic number, because the mean of its divisors is an integer number (108339).

2288902 is an apocalyptic number.

288902 is a deficient number, since it is larger than the sum of its proper divisors (144454).

288902 is a wasteful number, since it uses less digits than its factorization.

288902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144453.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 288902 is about 537.4960464971. The cubic root of 288902 is about 66.1074161457.

The spelling of 288902 in words is "two hundred eighty-eight thousand, nine hundred two".

Divisors: 1 2 144451 288902