388612040 has 16 divisors (see below), whose sum is σ = 874377180. Its totient is φ = 155444800.

The previous prime is 388612031. The next prime is 388612051. The reversal of 388612040 is 40216883.

It can be written as a sum of positive squares in 2 ways, for example, as 337603876 + 51008164 = 18374^2 + 7142^2 .

It is a junction number, because it is equal to n+sod(n) for n = 388611988 and 388612006.

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 3 ways as a sum of consecutive naturals, for example, 4857611 + ... + 4857690.

Almost surely, 2^388612040 is an apocalyptic number.

It is an amenable number.

388612040 is an abundant number, since it is smaller than the sum of its proper divisors (485765140).

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

388612040 is a wasteful number, since it uses less digits than its factorization.

388612040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715312 (or 9715308 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 388612040 is about 19713.2452934569. The cubic root of 388612040 is about 729.7466062425.

The spelling of 388612040 in words is "three hundred eighty-eight million, six hundred twelve thousand, forty".