38857121 has 8 divisors (see below), whose sum is σ = 41225184. Its totient is φ = 36498240.

The previous prime is 38857103. The next prime is 38857123. The reversal of 38857121 is 12175883.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38857121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38857123) 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 7 ways as a sum of consecutive naturals, for example, 7706 + ... + 11708.

It is an arithmetic number, because the mean of its divisors is an integer number (5153148).

Almost surely, 2^38857121 is an apocalyptic number.

It is an amenable number.

38857121 is a deficient number, since it is larger than the sum of its proper divisors (2368063).

38857121 is a wasteful number, since it uses less digits than its factorization.

38857121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591.

The product of its digits is 13440, while the sum is 35.

The square root of 38857121 is about 6233.5480266057. The cubic root of 38857121 is about 338.7065068546.

The spelling of 38857121 in words is "thirty-eight million, eight hundred fifty-seven thousand, one hundred twenty-one".