38820556 has 18 divisors (see below), whose sum is σ = 70205100. Its totient is φ = 18782280.

The previous prime is 38820547. The next prime is 38820581. The reversal of 38820556 is 65502883.

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 5 ways as a sum of consecutive naturals, for example, 1206 + ... + 8893.

Almost surely, 2^38820556 is an apocalyptic number.

It is an amenable number.

38820556 is a deficient number, since it is larger than the sum of its proper divisors (31384544).

38820556 is a wasteful number, since it uses less digits than its factorization.

38820556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10165 (or 10132 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 38820556 is about 6230.6144159304. The cubic root of 38820556 is about 338.6002312661.

The spelling of 38820556 in words is "thirty-eight million, eight hundred twenty thousand, five hundred fifty-six".