38636780 has 144 divisors (see below), whose sum is σ = 106251264. Its totient is φ = 11531520.

The previous prime is 38636779. The next prime is 38636797. The reversal of 38636780 is 8763683.

38636780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 544145 + ... + 544215.

It is an arithmetic number, because the mean of its divisors is an integer number (737856).

Almost surely, 2^38636780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38636780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53125632).

38636780 is an abundant number, since it is smaller than the sum of its proper divisors (67614484).

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

38636780 is a wasteful number, since it uses less digits than its factorization.

38636780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 38636780 is about 6215.8490972674. The cubic root of 38636780 is about 338.0650762273.

The spelling of 38636780 in words is "thirty-eight million, six hundred thirty-six thousand, seven hundred eighty".