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287401 = 3173127
BaseRepresentation
bin1000110001010101001
3112121020111
41012022221
533144101
610054321
72304622
oct1061251
9477214
10287401
11186a24
1211a3a1
13a0a7a
1476a49
155a251
hex462a9

287401 has 8 divisors (see below), whose sum is σ = 303104. Its totient is φ = 272160.

The previous prime is 287393. The next prime is 287437. The reversal of 287401 is 104782.

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

It is a cyclic number.

It is not a de Polignac number, because 287401 - 23 = 287393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (37888).

2287401 is an apocalyptic number.

It is an amenable number.

287401 is a deficient number, since it is larger than the sum of its proper divisors (15703).

287401 is a wasteful number, since it uses less digits than its factorization.

287401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 287401 is about 536.0979388134. The cubic root of 287401 is about 65.9927295328.

The spelling of 287401 in words is "two hundred eighty-seven thousand, four hundred one".

Divisors: 1 31 73 127 2263 3937 9271 287401