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29388961 = 731135433
BaseRepresentation
bin111000000011…
…1000010100001
32001022010002001
41300013002201
530010421321
62525524001
7504542050
oct160070241
961263061
1029388961
11156533a8
129a13601
13611cb24
143c90397
1528a7c91
hex1c070a1

29388961 has 8 divisors (see below), whose sum is σ = 34671104. Its totient is φ = 24377760.

The previous prime is 29388913. The next prime is 29388973. The reversal of 29388961 is 16988392.

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

It is a cyclic number.

It is not a de Polignac number, because 29388961 - 27 = 29388833 is a prime.

It is a super-2 number, since 2×293889612 = 1727422057319042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29388901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67500 + ... + 67933.

It is an arithmetic number, because the mean of its divisors is an integer number (4333888).

Almost surely, 229388961 is an apocalyptic number.

It is an amenable number.

29388961 is a deficient number, since it is larger than the sum of its proper divisors (5282143).

29388961 is a wasteful number, since it uses less digits than its factorization.

29388961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135471.

The product of its digits is 186624, while the sum is 46.

The square root of 29388961 is about 5421.1586399957. The cubic root of 29388961 is about 308.5991632654.

The spelling of 29388961 in words is "twenty-nine million, three hundred eighty-eight thousand, nine hundred sixty-one".

Divisors: 1 7 31 217 135433 948031 4198423 29388961