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29808468 = 2232828013
BaseRepresentation
bin111000110110…
…1011101010100
32002002102112100
41301231131110
530112332333
62542522100
7511240104
oct161553524
962072470
1029808468
111590a5a8
129b96330
136238a61
143d5d204
15293c213
hex1c6d754

29808468 has 18 divisors (see below), whose sum is σ = 75349274. Its totient is φ = 9936144.

The previous prime is 29808451. The next prime is 29808469. The reversal of 29808468 is 86480892.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29030544 + 777924 = 5388^2 + 882^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29808469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413971 + ... + 414042.

Almost surely, 229808468 is an apocalyptic number.

It is an amenable number.

29808468 is an abundant number, since it is smaller than the sum of its proper divisors (45540806).

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

29808468 is a wasteful number, since it uses less digits than its factorization.

29808468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828023 (or 828018 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 29808468 is about 5459.7131792797. The cubic root of 29808468 is about 310.0605778251.

It can be divided in two parts, 29808 and 468, that added together give a square (30276 = 1742).

The spelling of 29808468 in words is "twenty-nine million, eight hundred eight thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 828013 1656026 2484039 3312052 4968078 7452117 9936156 14904234 29808468