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285036401 = 13238771087
BaseRepresentation
bin10000111111010…
…100111101110001
3201212100100102202
4100333110331301
51040432131101
644141152545
710030524626
oct2077247561
9655310382
10285036401
11136994081
127b55b755
134708bbc0
1429bda34d
151a05536b
hex10fd4f71

285036401 has 16 divisors (see below), whose sum is σ = 320968704. Its totient is φ = 251152704.

The previous prime is 285036391. The next prime is 285036403. The reversal of 285036401 is 104630582.

It is a cyclic number.

It is not a de Polignac number, because 285036401 - 214 = 285020017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (285036403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261680 + ... + 262766.

It is an arithmetic number, because the mean of its divisors is an integer number (20060544).

Almost surely, 2285036401 is an apocalyptic number.

It is an amenable number.

285036401 is a deficient number, since it is larger than the sum of its proper divisors (35932303).

285036401 is a wasteful number, since it uses less digits than its factorization.

285036401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 285036401 is about 16883.0210862867. The cubic root of 285036401 is about 658.1124527952.

Adding to 285036401 its reverse (104630582), we get a palindrome (389666983).

The spelling of 285036401 in words is "two hundred eighty-five million, thirty-six thousand, four hundred one".

Divisors: 1 13 23 299 877 1087 11401 14131 20171 25001 262223 325013 953299 12392887 21925877 285036401