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29000000 = 265629
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.

Divisors: 1 2 4 5 8 10 16 20 25 29 32 40 50 58 64 80 100 116 125 145 160 200 232 250 290 320 400 464 500 580 625 725 800 928 1000 1160 1250 1450 1600 1856 2000 2320 2500 2900 3125 3625 4000 4640 5000 5800 6250 7250 8000 9280 10000 11600 12500 14500 15625 18125 20000 23200 25000 29000 31250 36250 40000 46400 50000 58000 62500 72500 90625 100000 116000 125000 145000 181250 200000 232000 250000 290000 362500 453125 500000 580000 725000 906250 1000000 1160000 1450000 1812500 2900000 3625000 5800000 7250000 14500000 29000000