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29132831 = 713320141
BaseRepresentation
bin110111100100…
…0100000011111
32000211002201202
41233020200133
524424222311
62520230115
7502424240
oct157104037
960732652
1029132831
1115498a22
12990b33b
136060380
143c24cc7
152856e3b
hex1bc881f

29132831 has 8 divisors (see below), whose sum is σ = 35855904. Its totient is φ = 23050080.

The previous prime is 29132821. The next prime is 29132863. The reversal of 29132831 is 13823192.

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 29132831 - 222 = 24938527 is a prime.

It is a super-2 number, since 2×291328312 = 1697443684149122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29132794 and 29132803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29132821) 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, 159980 + ... + 160161.

It is an arithmetic number, because the mean of its divisors is an integer number (4481988).

Almost surely, 229132831 is an apocalyptic number.

29132831 is a deficient number, since it is larger than the sum of its proper divisors (6723073).

29132831 is a wasteful number, since it uses less digits than its factorization.

29132831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320161.

The product of its digits is 2592, while the sum is 29.

The square root of 29132831 is about 5397.4837656078. The cubic root of 29132831 is about 307.7000474127.

The spelling of 29132831 in words is "twenty-nine million, one hundred thirty-two thousand, eight hundred thirty-one".

Divisors: 1 7 13 91 320141 2240987 4161833 29132831