388865480 has 32 divisors (see below), whose sum is σ = 926416440. Its totient is φ = 146396160.

The previous prime is 388865461. The next prime is 388865483. The reversal of 388865480 is 84568883.

It can be written as a sum of positive squares in 4 ways, for example, as 235254244 + 153611236 = 15338^2 + 12394^2 .

It is not an unprimeable number, because it can be changed into a prime (388865483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285251 + ... + 286610.

Almost surely, 2^388865480 is an apocalyptic number.

It is an amenable number.

388865480 is an abundant number, since it is smaller than the sum of its proper divisors (537550960).

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

388865480 is a wasteful number, since it uses less digits than its factorization.

388865480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571889 (or 571885 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The square root of 388865480 is about 19719.6724110721. The cubic root of 388865480 is about 729.9052106860.

The spelling of 388865480 in words is "three hundred eighty-eight million, eight hundred sixty-five thousand, four hundred eighty".