38978844 has 12 divisors (see below), whose sum is σ = 90950664. Its totient is φ = 12992944.

The previous prime is 38978827. The next prime is 38978921. The reversal of 38978844 is 44887983.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1624107 + ... + 1624130.

It is an arithmetic number, because the mean of its divisors is an integer number (7579222).

Almost surely, 2^38978844 is an apocalyptic number.

It is an amenable number.

38978844 is an abundant number, since it is smaller than the sum of its proper divisors (51971820).

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

38978844 is a wasteful number, since it uses less digits than its factorization.

38978844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248244 (or 3248242 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 38978844 is about 6243.3039330150. The cubic root of 38978844 is about 339.0598131509.

The spelling of 38978844 in words is "thirty-eight million, nine hundred seventy-eight thousand, eight hundred forty-four".