38028791 has 4 divisors (see below), whose sum is σ = 38042400. Its totient is φ = 38015184.

The previous prime is 38028787. The next prime is 38028797. The reversal of 38028791 is 19782083.

38028791 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 38028791 - 2² = 38028787 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 (38028797) 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, 911 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (9510600).

Almost surely, 2^38028791 is an apocalyptic number.

38028791 is a deficient number, since it is larger than the sum of its proper divisors (13609).

38028791 is an equidigital number, since it uses as much as digits as its factorization.

38028791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13608.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 38028791 is about 6166.7488192726. The cubic root of 38028791 is about 336.2824268189.

The spelling of 38028791 in words is "thirty-eight million, twenty-eight thousand, seven hundred ninety-one".