388003830 has 32 divisors (see below), whose sum is σ = 956379744. Its totient is φ = 100670976.

The previous prime is 388003829. The next prime is 388003849. The reversal of 388003830 is 38300883.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 388003791 and 388003800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173667 + ... + 175886.

It is an arithmetic number, because the mean of its divisors is an integer number (29886867).

Almost surely, 2^388003830 is an apocalyptic number.

388003830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

388003830 is an abundant number, since it is smaller than the sum of its proper divisors (568375914).

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

388003830 is a wasteful number, since it uses less digits than its factorization.

388003830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349600.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 388003830 is about 19697.8128227476. The cubic root of 388003830 is about 729.3657028499.

The spelling of 388003830 in words is "three hundred eighty-eight million, three thousand, eight hundred thirty".