Search a number
287148 = 22323929
BaseRepresentation
bin1000110000110101100
3112120220010
41012012230
533142043
610053220
72304111
oct1060654
9476803
10287148
11186814
1211a210
13a0914
1476908
155a133
hex461ac

287148 has 12 divisors (see below), whose sum is σ = 670040. Its totient is φ = 95712.

The previous prime is 287141. The next prime is 287149. The reversal of 287148 is 841782.

287148 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 218 + 84 + 1 + 75 + 4 + 84 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287148.

It is not an unprimeable number, because it can be changed into a prime (287141) by changing a digit.

287148 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11953 + ... + 11976.

2287148 is an apocalyptic number.

It is an amenable number.

287148 is an abundant number, since it is smaller than the sum of its proper divisors (382892).

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

287148 is a wasteful number, since it uses less digits than its factorization.

287148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23936 (or 23934 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 287148 is about 535.8619225136. The cubic root of 287148 is about 65.9733593123.

It can be divided in two parts, 287 and 148, that added together give a triangular number (435 = T29).

The spelling of 287148 in words is "two hundred eighty-seven thousand, one hundred forty-eight".