38668266 has 160 divisors (see below), whose sum is σ = 110909568. Its totient is φ = 9797760.

The previous prime is 38668247. The next prime is 38668277. The reversal of 38668266 is 66286683.

38668266 = T₈₇₆ + T₈₇₇ + ... + T₉₆₆.

38668266 is a `hidden beast` number, since 386 + 6 + 8 + 266 = 666.

38668266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 633876 + ... + 633936.

Almost surely, 2^38668266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38668266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55454784).

38668266 is an abundant number, since it is smaller than the sum of its proper divisors (72241302).

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

38668266 is a wasteful number, since it uses less digits than its factorization.

38668266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 129 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 38668266 is about 6218.3813006280. The cubic root of 38668266 is about 338.1568836265.

The spelling of 38668266 in words is "thirty-eight million, six hundred sixty-eight thousand, two hundred sixty-six".