38387830 has 16 divisors (see below), whose sum is σ = 74413584. Its totient is φ = 14173920.

The previous prime is 38387807. The next prime is 38387857. The reversal of 38387830 is 3878383.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147516 + ... + 147775.

It is an arithmetic number, because the mean of its divisors is an integer number (4650849).

Almost surely, 2^38387830 is an apocalyptic number.

38387830 is a deficient number, since it is larger than the sum of its proper divisors (36025754).

38387830 is a wasteful number, since it uses less digits than its factorization.

38387830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295311.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 38387830 is about 6195.7913134643. The cubic root of 38387830 is about 337.3374214676.

The spelling of 38387830 in words is "thirty-eight million, three hundred eighty-seven thousand, eight hundred thirty".