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38082865 = 57616573
BaseRepresentation
bin1001000101000…
…1100100110001
32122122210212111
42101101210301
534222122430
63440125321
7641461522
oct221214461
978583774
1038082865
111a551247
1210906841
137b75052
1450b4849
153523c2a
hex2451931

38082865 has 4 divisors (see below), whose sum is σ = 45699444. Its totient is φ = 30466288.

The previous prime is 38082857. The next prime is 38082881. The reversal of 38082865 is 56828083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56828083 = 134371391.

It can be written as a sum of positive squares in 2 ways, for example, as 21986721 + 16096144 = 4689^2 + 4012^2 .

It is a cyclic number.

It is not a de Polignac number, because 38082865 - 23 = 38082857 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3808282 + ... + 3808291.

It is an arithmetic number, because the mean of its divisors is an integer number (11424861).

Almost surely, 238082865 is an apocalyptic number.

It is an amenable number.

38082865 is a deficient number, since it is larger than the sum of its proper divisors (7616579).

38082865 is an equidigital number, since it uses as much as digits as its factorization.

38082865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616578.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 38082865 is about 6171.1315818090. The cubic root of 38082865 is about 336.4417405341.

The spelling of 38082865 in words is "thirty-eight million, eighty-two thousand, eight hundred sixty-five".

Divisors: 1 5 7616573 38082865