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38012605 = 57602521
BaseRepresentation
bin1001000100000…
…0011010111101
32122112020111021
42101000122331
534212400410
63434424141
7641046631
oct221003275
978466437
1038012605
111a503484
1210892051
137b4c087
145096dc1
15350ceda
hex24406bd

38012605 has 4 divisors (see below), whose sum is σ = 45615132. Its totient is φ = 30410080.

The previous prime is 38012587. The next prime is 38012609. The reversal of 38012605 is 50621083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50621083 = 71712973.

It can be written as a sum of positive squares in 2 ways, for example, as 10355524 + 27657081 = 3218^2 + 5259^2 .

It is a de Polignac number, because none of the positive numbers 2k-38012605 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38012605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38012609) 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 3 ways as a sum of consecutive naturals, for example, 3801256 + ... + 3801265.

It is an arithmetic number, because the mean of its divisors is an integer number (11403783).

Almost surely, 238012605 is an apocalyptic number.

It is an amenable number.

38012605 is a deficient number, since it is larger than the sum of its proper divisors (7602527).

38012605 is an equidigital number, since it uses as much as digits as its factorization.

38012605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602526.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 38012605 is about 6165.4363187045. The cubic root of 38012605 is about 336.2347099914.

Adding to 38012605 its reverse (50621083), we get a palindrome (88633688).

The spelling of 38012605 in words is "thirty-eight million, twelve thousand, six hundred five".

Divisors: 1 5 7602521 38012605