38256139 has 8 divisors (see below), whose sum is σ = 41569280. Its totient is φ = 35073000.

The previous prime is 38256091. The next prime is 38256143. The reversal of 38256139 is 93165283.

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

It is a cyclic number.

It is not a de Polignac number, because 38256139 - 2⁷ = 38256011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38256098 and 38256107.

It is not an unprimeable number, because it can be changed into a prime (38253139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31887 + ... + 33064.

It is an arithmetic number, because the mean of its divisors is an integer number (5196160).

Almost surely, 2^38256139 is an apocalyptic number.

38256139 is a deficient number, since it is larger than the sum of its proper divisors (3313141).

38256139 is a wasteful number, since it uses less digits than its factorization.

38256139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65001.

The product of its digits is 38880, while the sum is 37.

The square root of 38256139 is about 6185.1547272481. The cubic root of 38256139 is about 336.9512296354.

The spelling of 38256139 in words is "thirty-eight million, two hundred fifty-six thousand, one hundred thirty-nine".