38660261 has 8 divisors (see below), whose sum is σ = 41085144. Its totient is φ = 36252160.

The previous prime is 38660249. The next prime is 38660287. The reversal of 38660261 is 16206683.

38660261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12292036 + 26368225 = 3506^2 + 5135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38660261 - 2¹⁰ = 38659237 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 (38660201) 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 7 ways as a sum of consecutive naturals, for example, 731 + ... + 8823.

It is an arithmetic number, because the mean of its divisors is an integer number (5135643).

Almost surely, 2^38660261 is an apocalyptic number.

It is an amenable number.

38660261 is a deficient number, since it is larger than the sum of its proper divisors (2424883).

38660261 is a wasteful number, since it uses less digits than its factorization.

38660261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 38660261 is about 6217.7376110608. The cubic root of 38660261 is about 338.1335472412.

The spelling of 38660261 in words is "thirty-eight million, six hundred sixty thousand, two hundred sixty-one".