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29089481 = 71409711
BaseRepresentation
bin110111011110…
…1111011001001
32000201220021012
41232331323021
524421330411
62515253305
7502153661
oct156757311
960656235
1029089481
11154693a3
1298aa235
136046715
143c131a1
15284918b
hex1bbdec9

29089481 has 4 divisors (see below), whose sum is σ = 29499264. Its totient is φ = 28679700.

The previous prime is 29089453. The next prime is 29089493. The reversal of 29089481 is 18498092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-29089481 is a prime.

It is a super-2 number, since 2×290894812 = 1692395809698722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29089441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204785 + ... + 204926.

It is an arithmetic number, because the mean of its divisors is an integer number (7374816).

Almost surely, 229089481 is an apocalyptic number.

It is an amenable number.

29089481 is a deficient number, since it is larger than the sum of its proper divisors (409783).

29089481 is an equidigital number, since it uses as much as digits as its factorization.

29089481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409782.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 29089481 is about 5393.4665105107. The cubic root of 29089481 is about 307.5473512028.

The spelling of 29089481 in words is "twenty-nine million, eighty-nine thousand, four hundred eighty-one".

Divisors: 1 71 409711 29089481