38866818 has 16 divisors (see below), whose sum is σ = 81825120. Its totient is φ = 12273696.

The previous prime is 38866813. The next prime is 38866819. The reversal of 38866818 is 81866883.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38866813) 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, 170355 + ... + 170582.

It is an arithmetic number, because the mean of its divisors is an integer number (5114070).

Almost surely, 2^38866818 is an apocalyptic number.

38866818 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38866818 is an abundant number, since it is smaller than the sum of its proper divisors (42958302).

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

38866818 is a wasteful number, since it uses less digits than its factorization.

38866818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340961.

The product of its digits is 442368, while the sum is 48.

The square root of 38866818 is about 6234.3257855200. The cubic root of 38866818 is about 338.7346798444.

The spelling of 38866818 in words is "thirty-eight million, eight hundred sixty-six thousand, eight hundred eighteen".