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BaseRepresentation
bin110111010100…
…0000101000000
32000120100112002
41232220011000
524411000000
62513323132
7501332051
oct156500500
960510462
1029000000
1115408147
1298664a8
136014a83
143bcc728
15282c8d5
hex1ba8140

29000000 has 98 divisors (see below), whose sum is σ = 74413110. Its totient is φ = 11200000.

The previous prime is 28999991. The next prime is 29000039. The reversal of 29000000 is 92.

Subtracting from 29000000 its product of nonzero digits (18), we obtain a palindrome (28999982).

Adding to 29000000 its reverse (92), we get a palindrome (29000092).

It can be written as a sum of positive squares in 7 ways, for example, as 28987456 + 12544 = 5384^2 + 112^2 .

It is a sliding number, since 29000000 = 4000000 + 25000000 and 1/4000000 + 1/25000000 = 0.00000029000000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999986 + ... + 1000014.

Almost surely, 229000000 is an apocalyptic number.

29000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37206555).

29000000 is an abundant number, since it is smaller than the sum of its proper divisors (45413110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29000000 is an frugal number, since it uses more digits than its factorization.

29000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 29000000 is about 5385.1648071345. The cubic root of 29000000 is about 307.2316825686.

The spelling of 29000000 in words is "twenty-nine million", and thus it is an aban number and an uban number.