388620500 has 24 divisors (see below), whose sum is σ = 848748264. Its totient is φ = 155448000.

The previous prime is 388620499. The next prime is 388620511. The reversal of 388620500 is 5026883.

It can be written as a sum of positive squares in 4 ways, for example, as 10784656 + 377835844 = 3284^2 + 19438^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388121 + ... + 389120.

It is an arithmetic number, because the mean of its divisors is an integer number (35364511).

Almost surely, 2^388620500 is an apocalyptic number.

It is an amenable number.

388620500 is an abundant number, since it is smaller than the sum of its proper divisors (460127764).

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

388620500 is a wasteful number, since it uses less digits than its factorization.

388620500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777260 (or 777248 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 388620500 is about 19713.4598688307. The cubic root of 388620500 is about 729.7519016793.

The spelling of 388620500 in words is "three hundred eighty-eight million, six hundred twenty thousand, five hundred".