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38009725 = 5213116953
BaseRepresentation
bin1001000011111…
…1101101111101
32122112002112121
42100333231331
534212302400
63434402541
7641035345
oct220775575
978462477
1038009725
111a5012a6
1210890451
137b4a980
145095d25
15350c21a
hex243fb7d

38009725 has 12 divisors (see below), whose sum is σ = 50758036. Its totient is φ = 28068480.

The previous prime is 38009711. The next prime is 38009743. The reversal of 38009725 is 52790083.

It can be written as a sum of positive squares in 6 ways, for example, as 10067929 + 27941796 = 3173^2 + 5286^2 .

It is not a de Polignac number, because 38009725 - 211 = 38007677 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 58152 + ... + 58801.

Almost surely, 238009725 is an apocalyptic number.

It is an amenable number.

38009725 is a deficient number, since it is larger than the sum of its proper divisors (12748311).

38009725 is a wasteful number, since it uses less digits than its factorization.

38009725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116976 (or 116971 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 38009725 is about 6165.2027541679. The cubic root of 38009725 is about 336.2262182431.

The spelling of 38009725 in words is "thirty-eight million, nine thousand, seven hundred twenty-five".

Divisors: 1 5 13 25 65 325 116953 584765 1520389 2923825 7601945 38009725