38877138 has 16 divisors (see below), whose sum is σ = 86393760. Its totient is φ = 12959028.

The previous prime is 38877133. The next prime is 38877149. The reversal of 38877138 is 83177883.

38877138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38877138² = 3022863718142088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38877093 and 38877102.

It is not an unprimeable number, because it can be changed into a prime (38877133) 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 7 ways as a sum of consecutive naturals, for example, 359920 + ... + 360027.

It is an arithmetic number, because the mean of its divisors is an integer number (5399610).

Almost surely, 2^38877138 is an apocalyptic number.

38877138 is an abundant number, since it is smaller than the sum of its proper divisors (47516622).

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

38877138 is a wasteful number, since it uses less digits than its factorization.

38877138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719958 (or 719952 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 38877138 is about 6235.1534062924. The cubic root of 38877138 is about 338.7646577083.

It can be divided in two parts, 3887 and 7138, that added together give a square (11025 = 105²).

The spelling of 38877138 in words is "thirty-eight million, eight hundred seventy-seven thousand, one hundred thirty-eight".