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38395765 = 57679153
BaseRepresentation
bin1001001001110…
…1111101110101
32200020201002101
42102131331311
534312131030
63450542101
7644234002
oct222357565
980221071
1038395765
111a745341
1210a37931
137c545b5
1451568a9
1535867ca
hex249df75

38395765 has 4 divisors (see below), whose sum is σ = 46074924. Its totient is φ = 30716608.

The previous prime is 38395759. The next prime is 38395771. The reversal of 38395765 is 56759383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56759383 = 251226133.

It is an interprime number because it is at equal distance from previous prime (38395759) and next prime (38395771).

It can be written as a sum of positive squares in 2 ways, for example, as 24690961 + 13704804 = 4969^2 + 3702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38395765 is a prime.

It is a Duffinian number.

It is a congruent 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, 3839572 + ... + 3839581.

It is an arithmetic number, because the mean of its divisors is an integer number (11518731).

Almost surely, 238395765 is an apocalyptic number.

It is an amenable number.

38395765 is a deficient number, since it is larger than the sum of its proper divisors (7679159).

38395765 is an equidigital number, since it uses as much as digits as its factorization.

38395765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679158.

The product of its digits is 680400, while the sum is 46.

The square root of 38395765 is about 6196.4316344167. The cubic root of 38395765 is about 337.3606631045.

It can be divided in two parts, 3839 and 5765, that added together give a square (9604 = 982).

The spelling of 38395765 in words is "thirty-eight million, three hundred ninety-five thousand, seven hundred sixty-five".

Divisors: 1 5 7679153 38395765