387321004 has 24 divisors (see below), whose sum is σ = 815413760. Its totient is φ = 157257936.

The previous prime is 387321001. The next prime is 387321029. The reversal of 387321004 is 400123783.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (387321001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 363492 + ... + 364555.

Almost surely, 2^387321004 is an apocalyptic number.

It is an amenable number.

387321004 is an abundant number, since it is smaller than the sum of its proper divisors (428092756).

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

387321004 is a wasteful number, since it uses less digits than its factorization.

387321004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728077 (or 728075 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 387321004 is about 19680.4726569257. The cubic root of 387321004 is about 728.9375951318.

Adding to 387321004 its reverse (400123783), we get a palindrome (787444787).

The spelling of 387321004 in words is "three hundred eighty-seven million, three hundred twenty-one thousand, four".