38320145 has 4 divisors (see below), whose sum is σ = 45984180. Its totient is φ = 30656112.

The previous prime is 38320127. The next prime is 38320147. The reversal of 38320145 is 54102383.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18464209 + 19855936 = 4297^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 38320145 - 2⁶ = 38320081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38320147) 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, 3832010 + ... + 3832019.

It is an arithmetic number, because the mean of its divisors is an integer number (11496045).

Almost surely, 2^38320145 is an apocalyptic number.

It is an amenable number.

38320145 is a deficient number, since it is larger than the sum of its proper divisors (7664035).

38320145 is an equidigital number, since it uses as much as digits as its factorization.

38320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7664034.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 38320145 is about 6190.3267280492. The cubic root of 38320145 is about 337.1390416166.

The spelling of 38320145 in words is "thirty-eight million, three hundred twenty thousand, one hundred forty-five".