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2687253 = 31137927
BaseRepresentation
bin1010010000000100010101
312001112012220
422100010111
51141443003
6133332553
731561362
oct12200425
95045186
102687253
111575a78
12a97159
137311ba
144dd469
15381353
hex290115

2687253 has 8 divisors (see below), whose sum is σ = 3615168. Its totient is φ = 1775424.

The previous prime is 2687249. The next prime is 2687257. The reversal of 2687253 is 3527862.

It is an interprime number because it is at equal distance from previous prime (2687249) and next prime (2687257).

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

It is not a de Polignac number, because 2687253 - 22 = 2687249 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 24 + 6 + 84 + 77 + 218 + 55 + 313 .

It is a Curzon number.

2687253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3625 + ... + 4302.

It is an arithmetic number, because the mean of its divisors is an integer number (451896).

22687253 is an apocalyptic number.

It is an amenable number.

2687253 is a deficient number, since it is larger than the sum of its proper divisors (927915).

2687253 is a wasteful number, since it uses less digits than its factorization.

2687253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8043.

The product of its digits is 20160, while the sum is 33.

The square root of 2687253 is about 1639.2842950507. The cubic root of 2687253 is about 139.0281846820.

The spelling of 2687253 in words is "two million, six hundred eighty-seven thousand, two hundred fifty-three".

Divisors: 1 3 113 339 7927 23781 895751 2687253