38320091 has 8 divisors (see below), whose sum is σ = 40896000. Its totient is φ = 35779968.

The previous prime is 38320081. The next prime is 38320099. The reversal of 38320091 is 19002383.

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

It is not a de Polignac number, because 38320091 - 2⁶ = 38320027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38320091.

It is not an unprimeable number, because it can be changed into a prime (38320099) 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, 6716 + ... + 11033.

It is an arithmetic number, because the mean of its divisors is an integer number (5112000).

Almost surely, 2^38320091 is an apocalyptic number.

38320091 is a deficient number, since it is larger than the sum of its proper divisors (2575909).

38320091 is a wasteful number, since it uses less digits than its factorization.

38320091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17893.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 38320091 is about 6190.3223664039. The cubic root of 38320091 is about 337.1388832533.

The spelling of 38320091 in words is "thirty-eight million, three hundred twenty thousand, ninety-one".