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29889906 = 236774353
BaseRepresentation
bin111001000000…
…1010101110010
32002020120020120
41302001111302
530122434111
62544351110
7512026404
oct162012562
962216216
1029889906
1115965802
12a015496
136266b47
143d80b74
152956406
hex1c81572

29889906 has 16 divisors (see below), whose sum is σ = 60672864. Its totient is φ = 9814464.

The previous prime is 29889901. The next prime is 29889913. The reversal of 29889906 is 60998892.

It is not an unprimeable number, because it can be changed into a prime (29889901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36775 + ... + 37578.

It is an arithmetic number, because the mean of its divisors is an integer number (3792054).

Almost surely, 229889906 is an apocalyptic number.

29889906 is an abundant number, since it is smaller than the sum of its proper divisors (30782958).

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

29889906 is a wasteful number, since it uses less digits than its factorization.

29889906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74425.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 29889906 is about 5467.1661763660. The cubic root of 29889906 is about 310.3426872896.

The spelling of 29889906 in words is "twenty-nine million, eight hundred eighty-nine thousand, nine hundred six".

Divisors: 1 2 3 6 67 134 201 402 74353 148706 223059 446118 4981651 9963302 14944953 29889906