38878065 has 24 divisors (see below), whose sum is σ = 71354088. Its totient is φ = 19514880.

The previous prime is 38878057. The next prime is 38878093. The reversal of 38878065 is 56087883.

38878065 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 4 ways, for example, as 20007729 + 18870336 = 4473^2 + 4344^2 .

It is not a de Polignac number, because 38878065 - 2³ = 38878057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 38878065.

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 23 ways as a sum of consecutive naturals, for example, 24646 + ... + 26175.

It is an arithmetic number, because the mean of its divisors is an integer number (2973087).

Almost surely, 2^38878065 is an apocalyptic number.

It is an amenable number.

38878065 is a deficient number, since it is larger than the sum of its proper divisors (32476023).

38878065 is a wasteful number, since it uses less digits than its factorization.

38878065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50849 (or 50846 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 38878065 is about 6235.2277424325. The cubic root of 38878065 is about 338.7673502276.

The spelling of 38878065 in words is "thirty-eight million, eight hundred seventy-eight thousand, sixty-five".