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29910947 = 11731932
BaseRepresentation
bin111001000011…
…0011110100011
32002021122002212
41302012132203
530124122242
62545032335
7512144633
oct162063643
962248085
1029910947
111597a5a0
12a0256ab
1362735b1
143d886c3
15295c782
hex1c867a3

29910947 has 12 divisors (see below), whose sum is σ = 33249384. Its totient is φ = 26680320.

The previous prime is 29910931. The next prime is 29910949. The reversal of 29910947 is 74901992.

It is a happy number.

It is not a de Polignac number, because 29910947 - 24 = 29910931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29910949) 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 11 ways as a sum of consecutive naturals, for example, 154883 + ... + 155075.

It is an arithmetic number, because the mean of its divisors is an integer number (2770782).

Almost surely, 229910947 is an apocalyptic number.

29910947 is a deficient number, since it is larger than the sum of its proper divisors (3338437).

29910947 is an equidigital number, since it uses as much as digits as its factorization.

29910947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 29910947 is about 5469.0901437076. The cubic root of 29910947 is about 310.4154921225.

The spelling of 29910947 in words is "twenty-nine million, nine hundred ten thousand, nine hundred forty-seven".

Divisors: 1 11 73 193 803 2123 14089 37249 154979 409739 2719177 29910947