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287283007 = 11179145903
BaseRepresentation
bin10001000111111…
…001011100111111
3202000120111012101
4101013321130333
51042021024012
644301245531
710055602534
oct2107713477
9660514171
10287283007
11138188a80
12802638a7
134769765b
142a222d8b
151a34ad57
hex111f973f

287283007 has 8 divisors (see below), whose sum is σ = 315152640. Its totient is φ = 259705560.

The previous prime is 287282999. The next prime is 287283013. The reversal of 287283007 is 700382782.

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 287283007 - 23 = 287282999 is a prime.

It is a super-2 number, since 2×2872830072 = 165063052221924098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287283067) 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, 70983 + ... + 74920.

It is an arithmetic number, because the mean of its divisors is an integer number (39394080).

Almost surely, 2287283007 is an apocalyptic number.

287283007 is a deficient number, since it is larger than the sum of its proper divisors (27869633).

287283007 is a wasteful number, since it uses less digits than its factorization.

287283007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146093.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 287283007 is about 16949.4249754970. The cubic root of 287283007 is about 659.8369715177.

The spelling of 287283007 in words is "two hundred eighty-seven million, two hundred eighty-three thousand, seven".

Divisors: 1 11 179 1969 145903 1604933 26116637 287283007