388730844500 has 36 divisors (see below), whose sum is σ = 849018613716. Its totient is φ = 155486761200.

The previous prime is 388730844493. The next prime is 388730844511. The reversal of 388730844500 is 5448037883.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 12439387024 + 376291457476 = 111532^2 + 613426^2 .

It is a super-2 number, since 2×388730844500² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13927559 + ... + 13955441.

It is an arithmetic number, because the mean of its divisors is an integer number (23583850381).

Almost surely, 2^388730844500 is an apocalyptic number.

It is an amenable number.

388730844500 is an abundant number, since it is smaller than the sum of its proper divisors (460287769216).

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

388730844500 is an frugal number, since it uses more digits than its factorization.

388730844500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55785 (or 27890 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 388730844500 in words is "three hundred eighty-eight billion, seven hundred thirty million, eight hundred forty-four thousand, five hundred".