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29689741 = 173171617
BaseRepresentation
bin111000101000…
…0011110001101
32001212101200001
41301100132031
530100032431
62540204301
7510234004
oct161203615
961771601
1029689741
1115839384
129b39691
1361c69c3
143d2bc3b
152916e61
hex1c5078d

29689741 has 4 divisors (see below), whose sum is σ = 29861532. Its totient is φ = 29517952.

The previous prime is 29689739. The next prime is 29689753. The reversal of 29689741 is 14798692.

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 25050025 + 4639716 = 5005^2 + 2154^2 .

It is not a de Polignac number, because 29689741 - 21 = 29689739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29689691 and 29689700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29681741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85636 + ... + 85981.

It is an arithmetic number, because the mean of its divisors is an integer number (7465383).

Almost surely, 229689741 is an apocalyptic number.

It is an amenable number.

29689741 is a deficient number, since it is larger than the sum of its proper divisors (171791).

29689741 is a wasteful number, since it uses less digits than its factorization.

29689741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171790.

The product of its digits is 217728, while the sum is 46.

The square root of 29689741 is about 5448.8293238089. The cubic root of 29689741 is about 309.6483734204.

The spelling of 29689741 in words is "twenty-nine million, six hundred eighty-nine thousand, seven hundred forty-one".

Divisors: 1 173 171617 29689741