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14720725 = 5217191823
BaseRepresentation
bin111000001001…
…111011010101
31000200220001001
4320021323111
512232030400
61243303301
7236060365
oct70117325
930626031
1014720725
118344998
124b1ab31
1330854b6
141d529a5
15145ba6a
hexe09ed5

14720725 has 24 divisors (see below), whose sum is σ = 20355840. Its totient is φ = 10494720.

The previous prime is 14720711. The next prime is 14720731. The reversal of 14720725 is 52702741.

It is not a de Polignac number, because 14720725 - 27 = 14720597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14720693 and 14720702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7164 + ... + 8986.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 214720725 is an apocalyptic number.

It is an amenable number.

14720725 is a deficient number, since it is larger than the sum of its proper divisors (5635115).

14720725 is a wasteful number, since it uses less digits than its factorization.

14720725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 14720725 is about 3836.7597005807. The cubic root of 14720725 is about 245.0810505129.

The spelling of 14720725 in words is "fourteen million, seven hundred twenty thousand, seven hundred twenty-five".

Divisors: 1 5 17 19 25 85 95 323 425 475 1615 1823 8075 9115 30991 34637 45575 154955 173185 588829 774775 865925 2944145 14720725