387830105 has 16 divisors (see below), whose sum is σ = 503731200. Its totient is φ = 284948928.

The previous prime is 387830101. The next prime is 387830143. The reversal of 387830105 is 501038783.

It is a cyclic number.

It is not a de Polignac number, because 387830105 - 2² = 387830101 is a prime.

It is a super-2 number, since 2×387830105² = 300824380688622050, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (387830101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057 + ... + 27926.

It is an arithmetic number, because the mean of its divisors is an integer number (31483200).

Almost surely, 2^387830105 is an apocalyptic number.

It is an amenable number.

387830105 is a deficient number, since it is larger than the sum of its proper divisors (115901095).

387830105 is a wasteful number, since it uses less digits than its factorization.

387830105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30200.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 387830105 is about 19693.4025754820. The cubic root of 387830105 is about 729.2568310961.

Adding to 387830105 its reverse (501038783), we get a palindrome (888868888).

The spelling of 387830105 in words is "three hundred eighty-seven million, eight hundred thirty thousand, one hundred five".