304130432440 has 64 divisors (see below), whose sum is σ = 714239285760. Its totient is φ = 116331346560.

The previous prime is 304130432399. The next prime is 304130432443. The reversal of 304130432440 is 44234031403.

It is a super-2 number, since 2×304130432440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 304130432399 and 304130432408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304130432443) 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, 3496275 + ... + 3582205.

It is an arithmetic number, because the mean of its divisors is an integer number (11159988840).

Almost surely, 2^304130432440 is an apocalyptic number.

It is an amenable number.

304130432440 is an abundant number, since it is smaller than the sum of its proper divisors (410108853320).

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

304130432440 is a wasteful number, since it uses less digits than its factorization.

304130432440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89812 (or 89808 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 304130432440 its reverse (44234031403), we get a palindrome (348364463843).

The spelling of 304130432440 in words is "three hundred four billion, one hundred thirty million, four hundred thirty-two thousand, four hundred forty".