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287483994 = 23272281619
BaseRepresentation
bin10001001000101…
…010100001011010
3202000221200220100
4101020222201122
51042043441434
644305440230
710060400520
oct2110524132
9660850810
10287483994
11138305a86
1280340076
1347737c95
142a276310
151a38a699
hex1122a85a

287483994 has 24 divisors (see below), whose sum is σ = 711865440. Its totient is φ = 82138248.

The previous prime is 287483983. The next prime is 287484023. The reversal of 287483994 is 499384782.

It is a self number, because there is not a number n which added to its sum of digits gives 287483994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1140684 + ... + 1140935.

It is an arithmetic number, because the mean of its divisors is an integer number (29661060).

Almost surely, 2287483994 is an apocalyptic number.

287483994 is an abundant number, since it is smaller than the sum of its proper divisors (424381446).

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

287483994 is a wasteful number, since it uses less digits than its factorization.

287483994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281634 (or 2281631 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 287483994 is about 16955.3529600536. The cubic root of 287483994 is about 659.9908125443.

It can be divided in two parts, 2874 and 83994, that added together give a palindrome (86868).

The spelling of 287483994 in words is "two hundred eighty-seven million, four hundred eighty-three thousand, nine hundred ninety-four".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 2281619 4563238 6844857 13689714 15971333 20534571 31942666 41069142 47913999 95827998 143741997 287483994