38729838 has 32 divisors (see below), whose sum is σ = 92376576. Its totient is φ = 10584288.

The previous prime is 38729777. The next prime is 38729843. The reversal of 38729838 is 83892783.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19081 + ... + 21012.

It is an arithmetic number, because the mean of its divisors is an integer number (2886768).

Almost surely, 2^38729838 is an apocalyptic number.

38729838 is an abundant number, since it is smaller than the sum of its proper divisors (53646738).

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

38729838 is a wasteful number, since it uses less digits than its factorization.

38729838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40128.

The product of its digits is 580608, while the sum is 48.

The square root of 38729838 is about 6223.3301374746. The cubic root of 38729838 is about 338.3362723637.

The spelling of 38729838 in words is "thirty-eight million, seven hundred twenty-nine thousand, eight hundred thirty-eight".