Search a number
-
+
38606189 = 137281797
BaseRepresentation
bin1001001101000…
…1010101101101
32200122101201212
42103101111231
534340344224
63455244205
7646101326
oct223212555
980571655
1038606189
111a879446
1210b19665
137cc92cb
1451ad44d
1535c8d0e
hex24d156d

38606189 has 4 divisors (see below), whose sum is σ = 38888124. Its totient is φ = 38324256.

The previous prime is 38606177. The next prime is 38606203. The reversal of 38606189 is 98160683.

It is a happy number.

38606189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98160683 = 412394163.

It can be written as a sum of positive squares in 2 ways, for example, as 18130564 + 20475625 = 4258^2 + 4525^2 .

It is a cyclic number.

It is not a de Polignac number, because 38606189 - 28 = 38605933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38606159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140762 + ... + 141035.

It is an arithmetic number, because the mean of its divisors is an integer number (9722031).

Almost surely, 238606189 is an apocalyptic number.

It is an amenable number.

38606189 is a deficient number, since it is larger than the sum of its proper divisors (281935).

38606189 is a wasteful number, since it uses less digits than its factorization.

38606189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281934.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 38606189 is about 6213.3878842384. The cubic root of 38606189 is about 337.9758307006.

The spelling of 38606189 in words is "thirty-eight million, six hundred six thousand, one hundred eighty-nine".

Divisors: 1 137 281797 38606189