304464138 has 32 divisors (see below), whose sum is σ = 667464192. Its totient is φ = 91820400.

The previous prime is 304464137. The next prime is 304464161. The reversal of 304464138 is 831464403.

It is a happy number.

304464138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×304464138² = 185396822656166088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 304464099 and 304464108.

It is not an unprimeable number, because it can be changed into a prime (304464137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2995 + ... + 24857.

It is an arithmetic number, because the mean of its divisors is an integer number (20858256).

Almost surely, 2^304464138 is an apocalyptic number.

304464138 is an abundant number, since it is smaller than the sum of its proper divisors (363000054).

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

304464138 is a wasteful number, since it uses less digits than its factorization.

304464138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22090.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 304464138 is about 17448.9007676702. The cubic root of 304464138 is about 672.7371048422.

The spelling of 304464138 in words is "three hundred four million, four hundred sixty-four thousand, one hundred thirty-eight".