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29890189 = 741104147
BaseRepresentation
bin111001000000…
…1011010001101
32002020120122001
41302001122031
530122441224
62544352301
7512030260
oct162013215
962216561
1029890189
1115965a3a
12a015691
136267004
143d80cd7
152956544
hex1c8168d

29890189 has 8 divisors (see below), whose sum is σ = 34993728. Its totient is φ = 24995040.

The previous prime is 29890181. The next prime is 29890207. The reversal of 29890189 is 98109892.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29890189 - 23 = 29890181 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29890181) 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, 51787 + ... + 52360.

It is an arithmetic number, because the mean of its divisors is an integer number (4374216).

Almost surely, 229890189 is an apocalyptic number.

It is an amenable number.

29890189 is a deficient number, since it is larger than the sum of its proper divisors (5103539).

29890189 is a wasteful number, since it uses less digits than its factorization.

29890189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104195.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 29890189 is about 5467.1920580861. The cubic root of 29890189 is about 310.3436667363.

The spelling of 29890189 in words is "twenty-nine million, eight hundred ninety thousand, one hundred eighty-nine".

Divisors: 1 7 41 287 104147 729029 4270027 29890189