388482780 has 72 divisors (see below), whose sum is σ = 1265353488. Its totient is φ = 88795392.

The previous prime is 388482779. The next prime is 388482791. The reversal of 388482780 is 87284883.

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 23 ways as a sum of consecutive naturals, for example, 63129 + ... + 69008.

It is an arithmetic number, because the mean of its divisors is an integer number (17574354).

Almost surely, 2^388482780 is an apocalyptic number.

388482780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388482780 is an abundant number, since it is smaller than the sum of its proper divisors (876870708).

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

388482780 is a wasteful number, since it uses less digits than its factorization.

388482780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132163 (or 132154 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The square root of 388482780 is about 19709.9665144312. The cubic root of 388482780 is about 729.6656879170.

The spelling of 388482780 in words is "three hundred eighty-eight million, four hundred eighty-two thousand, seven hundred eighty".