38285391 has 4 divisors (see below), whose sum is σ = 51047192. Its totient is φ = 25523592.

The previous prime is 38285383. The next prime is 38285393. The reversal of 38285391 is 19358283.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38285391 - 2³ = 38285383 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 (38285393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6380896 + ... + 6380901.

It is an arithmetic number, because the mean of its divisors is an integer number (12761798).

Almost surely, 2^38285391 is an apocalyptic number.

38285391 is a deficient number, since it is larger than the sum of its proper divisors (12761801).

38285391 is a wasteful number, since it uses less digits than its factorization.

38285391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12761800.

The product of its digits is 51840, while the sum is 39.

The square root of 38285391 is about 6187.5189696679. The cubic root of 38285391 is about 337.0370893736.

The spelling of 38285391 in words is "thirty-eight million, two hundred eighty-five thousand, three hundred ninety-one".