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29720601 = 3659691
BaseRepresentation
bin111000101100…
…0000000011001
32001220222000000
41301120000121
530102024401
62541003213
7510422661
oct161300031
961828000
1029720601
111585a589
129b53509
136207a71
143d391a1
152921186
hex1c58019

29720601 has 28 divisors (see below), whose sum is σ = 45381360. Its totient is φ = 19449720.

The previous prime is 29720519. The next prime is 29720609. The reversal of 29720601 is 10602792.

It is not a de Polignac number, because 29720601 - 219 = 29196313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (29720609) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42666 + ... + 43356.

Almost surely, 229720601 is an apocalyptic number.

It is an amenable number.

29720601 is a deficient number, since it is larger than the sum of its proper divisors (15660759).

29720601 is an frugal number, since it uses more digits than its factorization.

With its successor (29720602) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (753).

29720601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 29720601 is about 5451.6603892759. The cubic root of 29720601 is about 309.7556207904.

The spelling of 29720601 in words is "twenty-nine million, seven hundred twenty thousand, six hundred one".

Divisors: 1 3 9 27 59 81 177 243 531 691 729 1593 2073 4779 6219 14337 18657 40769 43011 55971 122307 167913 366921 503739 1100763 3302289 9906867 29720601