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29580228 = 223491297
BaseRepresentation
bin111000011010…
…1101111000100
32001122211110000
41300311233010
530033031403
62534001300
7506266506
oct160655704
961584400
1029580228
1115774077
129aa6230
136188bc2
143cddd76
1528e47a3
hex1c35bc4

29580228 has 30 divisors (see below), whose sum is σ = 77329406. Its totient is φ = 9859968.

The previous prime is 29580223. The next prime is 29580241. The reversal of 29580228 is 82208592.

It can be written as a sum of positive squares in only one way, i.e., 25220484 + 4359744 = 5022^2 + 2088^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 29580192 and 29580201.

It is not an unprimeable number, because it can be changed into a prime (29580223) 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 9 ways as a sum of consecutive naturals, for example, 45325 + ... + 45972.

Almost surely, 229580228 is an apocalyptic number.

It is an amenable number.

29580228 is an abundant number, since it is smaller than the sum of its proper divisors (47749178).

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

29580228 is a wasteful number, since it uses less digits than its factorization.

29580228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91313 (or 91302 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 29580228 is about 5438.7708170137. The cubic root of 29580228 is about 309.2671833671.

The spelling of 29580228 in words is "twenty-nine million, five hundred eighty thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 91297 182594 273891 365188 547782 821673 1095564 1643346 2465019 3286692 4930038 7395057 9860076 14790114 29580228