Search a number
-
+
10388917 = 711134921
BaseRepresentation
bin100111101000…
…010110110101
3201112210220201
4213220112311
510124421132
61010400501
7154206250
oct47502665
921483821
1010388917
115956390
123590131
1321c98b6
141546097
15da32e7
hex9e85b5

10388917 has 8 divisors (see below), whose sum is σ = 12952512. Its totient is φ = 8095200.

The previous prime is 10388891. The next prime is 10388923. The reversal of 10388917 is 71988301.

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 10388917 - 27 = 10388789 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 (10388947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67384 + ... + 67537.

It is an arithmetic number, because the mean of its divisors is an integer number (1619064).

Almost surely, 210388917 is an apocalyptic number.

It is an amenable number.

10388917 is a deficient number, since it is larger than the sum of its proper divisors (2563595).

10388917 is a wasteful number, since it uses less digits than its factorization.

10388917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134939.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 10388917 is about 3223.1842950722. The cubic root of 10388917 is about 218.2010111851.

The spelling of 10388917 in words is "ten million, three hundred eighty-eight thousand, nine hundred seventeen".

Divisors: 1 7 11 77 134921 944447 1484131 10388917