304236240 has 320 divisors, whose sum is σ = 1194780672. Its totient is φ = 62208000.

The previous prime is 304236221. The next prime is 304236241. The reversal of 304236240 is 42632403.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 304236240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304236241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1866399 + ... + 1866561.

Almost surely, 2^304236240 is an apocalyptic number.

304236240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304236240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597390336).

304236240 is an abundant number, since it is smaller than the sum of its proper divisors (890544432).

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

304236240 is a wasteful number, since it uses less digits than its factorization.

304236240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 304236240 is about 17442.3691051417. The cubic root of 304236240 is about 672.5692101810.

Adding to 304236240 its reverse (42632403), we get a palindrome (346868643).

It can be divided in two parts, 30423 and 6240, that added together give a palindrome (36663).

The spelling of 304236240 in words is "three hundred four million, two hundred thirty-six thousand, two hundred forty".