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286925941 = 535413697
BaseRepresentation
bin10001000110100…
…010010001110101
3201222220100101201
4101012202101311
51041423112231
644245452501
710052554531
oct2106422165
9658810351
10286925941
11137a64785
1280111131
13475a0c83
142a16cbc1
151a2ca161
hex111a2475

286925941 has 4 divisors (see below), whose sum is σ = 292339692. Its totient is φ = 281512192.

The previous prime is 286925923. The next prime is 286925963. The reversal of 286925941 is 149529682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149529682 = 274764841.

It can be written as a sum of positive squares in 2 ways, for example, as 132917841 + 154008100 = 11529^2 + 12410^2 .

It is a cyclic number.

It is not a de Polignac number, because 286925941 - 211 = 286923893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 286925891 and 286925900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286925911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2706796 + ... + 2706901.

It is an arithmetic number, because the mean of its divisors is an integer number (73084923).

Almost surely, 2286925941 is an apocalyptic number.

It is an amenable number.

286925941 is a deficient number, since it is larger than the sum of its proper divisors (5413751).

286925941 is an equidigital number, since it uses as much as digits as its factorization.

286925941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413750.

The product of its digits is 311040, while the sum is 46.

The square root of 286925941 is about 16938.8884227980. Note that the first 3 decimals coincide. The cubic root of 286925941 is about 659.5634862301.

The spelling of 286925941 in words is "two hundred eighty-six million, nine hundred twenty-five thousand, nine hundred forty-one".

Divisors: 1 53 5413697 286925941