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2132905 = 517231091
BaseRepresentation
bin1000001000101110101001
311000100210111
420020232221
51021223110
6113414321
724062245
oct10105651
94010714
102132905
111227535
1286a3a1
13598a98
143d7425
152c1e8a
hex208ba9

2132905 has 16 divisors (see below), whose sum is σ = 2830464. Its totient is φ = 1534720.

The previous prime is 2132903. The next prime is 2132941. The reversal of 2132905 is 5092312.

It is not a de Polignac number, because 2132905 - 21 = 2132903 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 (2132903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410 + ... + 2500.

It is an arithmetic number, because the mean of its divisors is an integer number (176904).

22132905 is an apocalyptic number.

It is an amenable number.

2132905 is a deficient number, since it is larger than the sum of its proper divisors (697559).

2132905 is a wasteful number, since it uses less digits than its factorization.

2132905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2132905 is about 1460.4468494266. The cubic root of 2132905 is about 128.7233017189.

The spelling of 2132905 in words is "two million, one hundred thirty-two thousand, nine hundred five".

Divisors: 1 5 17 23 85 115 391 1091 1955 5455 18547 25093 92735 125465 426581 2132905