388082745 has 40 divisors (see below), whose sum is σ = 697595976. Its totient is φ = 206406144.

The previous prime is 388082743. The next prime is 388082789. The reversal of 388082745 is 547280883.

It can be written as a sum of positive squares in 4 ways, for example, as 73410624 + 314672121 = 8568^2 + 17739^2 .

It is not a de Polignac number, because 388082745 - 2¹ = 388082743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 388082745.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388082743) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 174259 + ... + 176471.

Almost surely, 2^388082745 is an apocalyptic number.

It is an amenable number.

388082745 is a deficient number, since it is larger than the sum of its proper divisors (309513231).

388082745 is a wasteful number, since it uses less digits than its factorization.

388082745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 388082745 is about 19699.8158620836. The cubic root of 388082745 is about 729.4151473728.

The spelling of 388082745 in words is "three hundred eighty-eight million, eighty-two thousand, seven hundred forty-five".