38940066 has 48 divisors (see below), whose sum is σ = 92607840. Its totient is φ = 11727360.

The previous prime is 38940053. The next prime is 38940071. The reversal of 38940066 is 66004983.

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 38940066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37705 + ... + 38723.

It is an arithmetic number, because the mean of its divisors is an integer number (1929330).

Almost surely, 2^38940066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38940066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46303920).

38940066 is an abundant number, since it is smaller than the sum of its proper divisors (53667774).

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

38940066 is a wasteful number, since it uses less digits than its factorization.

38940066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1228 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 38940066 is about 6240.1975930254. The cubic root of 38940066 is about 338.9473382577.

The spelling of 38940066 in words is "thirty-eight million, nine hundred forty thousand, sixty-six".