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287394 = 23192521
BaseRepresentation
bin1000110001010100010
3112121020020
41012022202
533144034
610054310
72304612
oct1061242
9477206
10287394
11186a18
1211a396
13a0a73
1476a42
155a249
hex462a2

287394 has 16 divisors (see below), whose sum is σ = 605280. Its totient is φ = 90720.

The previous prime is 287393. The next prime is 287437. The reversal of 287394 is 493782.

287394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2873942 = 165190622472, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287394.

It is not an unprimeable number, because it can be changed into a prime (287393) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1147 + ... + 1374.

It is an arithmetic number, because the mean of its divisors is an integer number (37830).

2287394 is an apocalyptic number.

287394 is an abundant number, since it is smaller than the sum of its proper divisors (317886).

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

287394 is a wasteful number, since it uses less digits than its factorization.

287394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545.

The product of its digits is 12096, while the sum is 33.

The square root of 287394 is about 536.0914101158. The cubic root of 287394 is about 65.9921937508.

The spelling of 287394 in words is "two hundred eighty-seven thousand, three hundred ninety-four".