38331666 has 12 divisors (see below), whose sum is σ = 83051982. Its totient is φ = 12777216.

The previous prime is 38331661. The next prime is 38331691. The reversal of 38331666 is 66613383.

It can be written as a sum of positive squares in only one way, i.e., 27342441 + 10989225 = 5229^2 + 3315^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38331666.

It is not an unprimeable number, because it can be changed into a prime (38331661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1064751 + ... + 1064786.

Almost surely, 2^38331666 is an apocalyptic number.

38331666 is an abundant number, since it is smaller than the sum of its proper divisors (44720316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38331666 is a wasteful number, since it uses less digits than its factorization.

38331666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129545 (or 2129542 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 38331666 is about 6191.2572228910. The cubic root of 38331666 is about 337.1728253241.

The spelling of 38331666 in words is "thirty-eight million, three hundred thirty-one thousand, six hundred sixty-six".