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287081201 = 11433371801
BaseRepresentation
bin10001000111001…
…000001011110001
3202000012020101002
4101013020023301
51041443044301
644253051345
710054102301
oct2107101361
9660166332
10287081201
111380603a0
1280186b55
1347626844
142a1ad601
151a30b16b
hex111c82f1

287081201 has 16 divisors (see below), whose sum is σ = 321592128. Its totient is φ = 254016000.

The previous prime is 287081191. The next prime is 287081209. The reversal of 287081201 is 102180782.

It is a cyclic number.

It is not a de Polignac number, because 287081201 - 222 = 282886897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287081209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158501 + ... + 160301.

It is an arithmetic number, because the mean of its divisors is an integer number (20099508).

Almost surely, 2287081201 is an apocalyptic number.

It is an amenable number.

287081201 is a deficient number, since it is larger than the sum of its proper divisors (34510927).

287081201 is a wasteful number, since it uses less digits than its factorization.

287081201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 287081201 is about 16943.4707483443. The cubic root of 287081201 is about 659.6824313968.

The spelling of 287081201 in words is "two hundred eighty-seven million, eighty-one thousand, two hundred one".

Divisors: 1 11 43 337 473 1801 3707 14491 19811 77443 159401 606937 851873 6676307 26098291 287081201