388421032 has 16 divisors (see below), whose sum is σ = 771130260. Its totient is φ = 182786304.

The previous prime is 388421029. The next prime is 388421039. The reversal of 388421032 is 230124883.

It can be written as a sum of positive squares in 2 ways, for example, as 318765316 + 69655716 = 17854^2 + 8346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 388420985 and 388421003.

It is not an unprimeable number, because it can be changed into a prime (388421039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427883 + ... + 1428154.

Almost surely, 2^388421032 is an apocalyptic number.

It is an amenable number.

388421032 is a deficient number, since it is larger than the sum of its proper divisors (382709228).

388421032 is a wasteful number, since it uses less digits than its factorization.

388421032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856060 (or 2856056 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 388421032 is about 19708.4000365326. The cubic root of 388421032 is about 729.6270265859.

The spelling of 388421032 in words is "three hundred eighty-eight million, four hundred twenty-one thousand, thirty-two".