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286020091 = 7192150527
BaseRepresentation
bin10001000011000…
…101000111111011
3201221012022210201
4101003011013323
51041210120331
644214223031
710042062550
oct2103050773
9657168721
10286020091
111374a6145
127b954a77
1347344876
1429db4a27
151a19ba61
hex110c51fb

286020091 has 8 divisors (see below), whose sum is σ = 344084480. Its totient is φ = 232256808.

The previous prime is 286020089. The next prime is 286020103. The reversal of 286020091 is 190020682.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 286020091 - 21 = 286020089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (286020041) 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, 1075131 + ... + 1075396.

It is an arithmetic number, because the mean of its divisors is an integer number (43010560).

Almost surely, 2286020091 is an apocalyptic number.

286020091 is a deficient number, since it is larger than the sum of its proper divisors (58064389).

286020091 is a wasteful number, since it uses less digits than its factorization.

286020091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150553.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 286020091 is about 16912.1285177236. The cubic root of 286020091 is about 658.8686548540.

The spelling of 286020091 in words is "two hundred eighty-six million, twenty thousand, ninety-one".

Divisors: 1 7 19 133 2150527 15053689 40860013 286020091