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38070865 = 572347293
BaseRepresentation
bin1001000100111…
…0101001010001
32122122012102001
42101032221101
534221231430
63435554001
7641411530
oct221165121
978565361
1038070865
111a543228
12108bb901
137b6c751
1450b0317
1535203ca
hex244ea51

38070865 has 16 divisors (see below), whose sum is σ = 54482688. Its totient is φ = 24970176.

The previous prime is 38070863. The next prime is 38070959. The reversal of 38070865 is 56807083.

It is not a de Polignac number, because 38070865 - 21 = 38070863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38070863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22842 + ... + 24451.

It is an arithmetic number, because the mean of its divisors is an integer number (3405168).

Almost surely, 238070865 is an apocalyptic number.

38070865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38070865 is a deficient number, since it is larger than the sum of its proper divisors (16411823).

38070865 is a wasteful number, since it uses less digits than its factorization.

38070865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47328.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 38070865 is about 6170.1592361948. The cubic root of 38070865 is about 336.4063989615.

The spelling of 38070865 in words is "thirty-eight million, seventy thousand, eight hundred sixty-five".

Divisors: 1 5 7 23 35 115 161 805 47293 236465 331051 1087739 1655255 5438695 7614173 38070865