38355666 has 16 divisors (see below), whose sum is σ = 78344064. Its totient is φ = 12513104.

The previous prime is 38355637. The next prime is 38355671. The reversal of 38355666 is 66655383.

It is a super-2 number, since 2×38355666² = 2942314228607112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67725 + ... + 68288.

It is an arithmetic number, because the mean of its divisors is an integer number (4896504).

Almost surely, 2^38355666 is an apocalyptic number.

38355666 is an abundant number, since it is smaller than the sum of its proper divisors (39988398).

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

38355666 is a wasteful number, since it uses less digits than its factorization.

38355666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136065.

The product of its digits is 388800, while the sum is 42.

The square root of 38355666 is about 6193.1951365995. The cubic root of 38355666 is about 337.2431802062.

The spelling of 38355666 in words is "thirty-eight million, three hundred fifty-five thousand, six hundred sixty-six".