388733265 has 12 divisors (see below), whose sum is σ = 673804404. Its totient is φ = 207324384.

The previous prime is 388733251. The next prime is 388733299. The reversal of 388733265 is 562337883.

388733265 is a `hidden beast` number, since 388 + 7 + 3 + 3 + 265 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 273836304 + 114896961 = 16548^2 + 10719^2 .

It is not a de Polignac number, because 388733265 - 2¹⁰ = 388732241 is a prime.

It is a super-2 number, since 2×388733265² = 302227102635120450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 8638517 = 388733265 / (3 + 8 + 8 + 7 + 3 + 3 + 2 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 388733265.

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, 4319214 + ... + 4319303.

It is an arithmetic number, because the mean of its divisors is an integer number (56150367).

Almost surely, 2^388733265 is an apocalyptic number.

It is an amenable number.

388733265 is a deficient number, since it is larger than the sum of its proper divisors (285071139).

388733265 is a wasteful number, since it uses less digits than its factorization.

388733265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8638528 (or 8638525 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 388733265 is about 19716.3197630795. The cubic root of 388733265 is about 729.8224782573.

The spelling of 388733265 in words is "three hundred eighty-eight million, seven hundred thirty-three thousand, two hundred sixty-five".