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287330030 = 25132396097
BaseRepresentation
bin10001001000000…
…100111011101110
3202000122212200222
4101020010323232
51042024030110
644302251342
710056156611
oct2110047356
9660585628
10287330030
11138210339
1280286b52
13476b2b90
142a236178
151a359c55
hex11204eee

287330030 has 32 divisors (see below), whose sum is σ = 581200704. Its totient is φ = 101477376.

The previous prime is 287330023. The next prime is 287330063. The reversal of 287330030 is 30033782.

It is a super-2 number, since 2×2873300302 = 165117092279601800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45059 + ... + 51038.

It is an arithmetic number, because the mean of its divisors is an integer number (18162522).

Almost surely, 2287330030 is an apocalyptic number.

287330030 is an abundant number, since it is smaller than the sum of its proper divisors (293870674).

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

287330030 is a wasteful number, since it uses less digits than its factorization.

287330030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96140.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 287330030 is about 16950.8120749420. The cubic root of 287330030 is about 659.8729706549.

The spelling of 287330030 in words is "two hundred eighty-seven million, three hundred thirty thousand, thirty".

Divisors: 1 2 5 10 13 23 26 46 65 115 130 230 299 598 1495 2990 96097 192194 480485 960970 1249261 2210231 2498522 4420462 6246305 11051155 12492610 22102310 28733003 57466006 143665015 287330030