38636390 has 32 divisors (see below), whose sum is σ = 75176640. Its totient is φ = 14212224.

The previous prime is 38636387. The next prime is 38636419. The reversal of 38636390 is 9363683.

38636390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 56732 + ... + 57408.

It is an arithmetic number, because the mean of its divisors is an integer number (2349270).

Almost surely, 2^38636390 is an apocalyptic number.

38636390 is a deficient number, since it is larger than the sum of its proper divisors (36540250).

38636390 is a wasteful number, since it uses less digits than its factorization.

38636390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 38636390 is about 6215.8177257703. The cubic root of 38636390 is about 338.0639387461.

The spelling of 38636390 in words is "thirty-eight million, six hundred thirty-six thousand, three hundred ninety".