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29028129 = 3131743783
BaseRepresentation
bin110111010111…
…0111100100001
32000121210002220
41232232330201
524412400004
62514101253
7501510054
oct156567441
960553086
1029028129
1115427299
12987a829
136024810
143bd8a9b
152835dd9
hex1baef21

29028129 has 16 divisors (see below), whose sum is σ = 44134272. Its totient is φ = 16812288.

The previous prime is 29028127. The next prime is 29028161. The reversal of 29028129 is 92182092.

It is a happy number.

It is not a de Polignac number, because 29028129 - 21 = 29028127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29028129.

It is not an unprimeable number, because it can be changed into a prime (29028127) 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, 21229 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (2758392).

Almost surely, 229028129 is an apocalyptic number.

It is an amenable number.

29028129 is a deficient number, since it is larger than the sum of its proper divisors (15106143).

29028129 is a wasteful number, since it uses less digits than its factorization.

29028129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43816.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 29028129 is about 5387.7758862076. The cubic root of 29028129 is about 307.3309851814.

The spelling of 29028129 in words is "twenty-nine million, twenty-eight thousand, one hundred twenty-nine".

Divisors: 1 3 13 17 39 51 221 663 43783 131349 569179 744311 1707537 2232933 9676043 29028129