38032891 has 16 divisors (see below), whose sum is σ = 42940800. Its totient is φ = 33441408.

The previous prime is 38032849. The next prime is 38032901. The reversal of 38032891 is 19823083.

It is a de Polignac number, because none of the positive numbers 2^k-38032891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38032801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29145 + ... + 30421.

It is an arithmetic number, because the mean of its divisors is an integer number (2683800).

Almost surely, 2^38032891 is an apocalyptic number.

38032891 is a deficient number, since it is larger than the sum of its proper divisors (4907909).

38032891 is a wasteful number, since it uses less digits than its factorization.

38032891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 38032891 is about 6167.0812383169. The cubic root of 38032891 is about 336.2945115962.

The spelling of 38032891 in words is "thirty-eight million, thirty-two thousand, eight hundred ninety-one".