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10387285 = 56133389
BaseRepresentation
bin100111100111…
…111101010101
3201112201200021
4213213331111
510124343120
61010345141
7154201426
oct47477525
921481607
1010387285
115955137
12358b1b1
1321c8c2c
14154564d
15da2aaa
hex9e7f55

10387285 has 8 divisors (see below), whose sum is σ = 12488760. Its totient is φ = 8293824.

The previous prime is 10387261. The next prime is 10387291. The reversal of 10387285 is 58278301.

10387285 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 708964 + 9678321 = 842^2 + 3111^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10387285 - 221 = 8290133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10387285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371 + ... + 4759.

It is an arithmetic number, because the mean of its divisors is an integer number (1561095).

Almost surely, 210387285 is an apocalyptic number.

It is an amenable number.

10387285 is a deficient number, since it is larger than the sum of its proper divisors (2101475).

10387285 is an equidigital number, since it uses as much as digits as its factorization.

10387285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 10387285 is about 3222.9311193384. The cubic root of 10387285 is about 218.1895848193.

The spelling of 10387285 in words is "ten million, three hundred eighty-seven thousand, two hundred eighty-five".

Divisors: 1 5 613 3065 3389 16945 2077457 10387285