380640052 has 18 divisors (see below), whose sum is σ = 721302918. Its totient is φ = 175679712.

The previous prime is 380640049. The next prime is 380640077. The reversal of 380640052 is 250046083.

It can be written as a sum of positive squares in 3 ways, for example, as 30426256 + 350213796 = 5516^2 + 18714^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 380640052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280863 + ... + 282214.

Almost surely, 2^380640052 is an apocalyptic number.

It is an amenable number.

380640052 is a deficient number, since it is larger than the sum of its proper divisors (340662866).

380640052 is a wasteful number, since it uses less digits than its factorization.

380640052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563107 (or 563092 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 380640052 is about 19509.9987698616. The cubic root of 380640052 is about 724.7220826183.

The spelling of 380640052 in words is "three hundred eighty million, six hundred forty thousand, fifty-two".