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29030389 = 199714537
BaseRepresentation
bin110111010111…
…1011111110101
32000121220012121
41232233133311
524412433024
62514115541
7501516463
oct156573765
960556177
1029030389
1115428a63
12987bbb1
13602585b
143bd9833
1528368e4
hex1baf7f5

29030389 has 4 divisors (see below), whose sum is σ = 29046924. Its totient is φ = 29013856.

The previous prime is 29030387. The next prime is 29030401. The reversal of 29030389 is 98303092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3122289 + 25908100 = 1767^2 + 5090^2 .

It is a cyclic number.

It is not a de Polignac number, because 29030389 - 21 = 29030387 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29030387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5272 + ... + 9265.

It is an arithmetic number, because the mean of its divisors is an integer number (7261731).

Almost surely, 229030389 is an apocalyptic number.

It is an amenable number.

29030389 is a deficient number, since it is larger than the sum of its proper divisors (16535).

29030389 is a wasteful number, since it uses less digits than its factorization.

29030389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16534.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 29030389 is about 5387.9856161649. The cubic root of 29030389 is about 307.3389607787.

The spelling of 29030389 in words is "twenty-nine million, thirty thousand, three hundred eighty-nine".

Divisors: 1 1997 14537 29030389