38907856 has 30 divisors (see below), whose sum is σ = 81634470. Its totient is φ = 17956224.

The previous prime is 38907851. The next prime is 38907857. The reversal of 38907856 is 65870983.

38907856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 467856 + 38440000 = 684^2 + 6200^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38907851) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4491 + ... + 9898.

It is an arithmetic number, because the mean of its divisors is an integer number (2721149).

Almost surely, 2^38907856 is an apocalyptic number.

It is an amenable number.

38907856 is an abundant number, since it is smaller than the sum of its proper divisors (42726614).

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

38907856 is a wasteful number, since it uses less digits than its factorization.

38907856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423 (or 14404 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 38907856 is about 6237.6162113423. The cubic root of 38907856 is about 338.8538569459.

The spelling of 38907856 in words is "thirty-eight million, nine hundred seven thousand, eight hundred fifty-six".