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10081215 = 325224027
BaseRepresentation
bin100110011101…
…001110111111
3200222011211100
4212131032333
510040044330
61000024143
7151455204
oct46351677
920864740
1010081215
115766191
123462053
13211c821
1414a5cab
15d42060
hex99d3bf

10081215 has 12 divisors (see below), whose sum is σ = 17474184. Its totient is φ = 5376624.

The previous prime is 10081193. The next prime is 10081217. The reversal of 10081215 is 51218001.

10081215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10081215 - 26 = 10081151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10081217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111969 + ... + 112058.

It is an arithmetic number, because the mean of its divisors is an integer number (1456182).

Almost surely, 210081215 is an apocalyptic number.

10081215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10081215 is a deficient number, since it is larger than the sum of its proper divisors (7392969).

10081215 is a wasteful number, since it uses less digits than its factorization.

10081215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224038 (or 224035 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 10081215 is about 3175.0929120264. The cubic root of 10081215 is about 216.0251385351.

Adding to 10081215 its reverse (51218001), we get a palindrome (61299216).

It can be divided in two parts, 10081 and 215, that added together give a triangular number (10296 = T143).

The spelling of 10081215 in words is "ten million, eighty-one thousand, two hundred fifteen".

Divisors: 1 3 5 9 15 45 224027 672081 1120135 2016243 3360405 10081215