304040040390 has 48 divisors (see below), whose sum is σ = 801637982496. Its totient is φ = 79935408000.

The previous prime is 304040040389. The next prime is 304040040407. The reversal of 304040040390 is 93040040403.

304040040390 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23783911 + ... + 23796690.

It is an arithmetic number, because the mean of its divisors is an integer number (16700791302).

Almost surely, 2^304040040390 is an apocalyptic number.

304040040390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

304040040390 is an abundant number, since it is smaller than the sum of its proper divisors (497597942106).

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

304040040390 is a wasteful number, since it uses less digits than its factorization.

304040040390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47580685 (or 47580682 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 304040040390 its reverse (93040040403), we get a palindrome (397080080793).

The spelling of 304040040390 in words is "three hundred four billion, forty million, forty thousand, three hundred ninety".