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10387087 = 71146297
BaseRepresentation
bin100111100111…
…111010001111
3201112201101221
4213213322033
510124341322
61010344211
7154201024
oct47477217
921481357
1010387087
115954a77
12358b067
1321c8b09
14154554b
15da29c7
hex9e7e8f

10387087 has 4 divisors (see below), whose sum is σ = 10533456. Its totient is φ = 10240720.

The previous prime is 10387079. The next prime is 10387109. The reversal of 10387087 is 78078301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10387087 - 23 = 10387079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10387057) 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, 73078 + ... + 73219.

It is an arithmetic number, because the mean of its divisors is an integer number (2633364).

Almost surely, 210387087 is an apocalyptic number.

10387087 is a deficient number, since it is larger than the sum of its proper divisors (146369).

10387087 is an equidigital number, since it uses as much as digits as its factorization.

10387087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146368.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 10387087 is about 3222.9004018120. The cubic root of 10387087 is about 218.1881984508.

The spelling of 10387087 in words is "ten million, three hundred eighty-seven thousand, eighty-seven".

Divisors: 1 71 146297 10387087