305274524240 has 80 divisors (see below), whose sum is σ = 813006416640. Its totient is φ = 104427048960.

The previous prime is 305274524239. The next prime is 305274524249. The reversal of 305274524240 is 42425472503.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 305274524194 and 305274524203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305274524249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375041 + ... + 866720.

It is an arithmetic number, because the mean of its divisors is an integer number (10162580208).

Almost surely, 2^305274524240 is an apocalyptic number.

It is an amenable number.

305274524240 is an abundant number, since it is smaller than the sum of its proper divisors (507731892400).

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

305274524240 is a wasteful number, since it uses less digits than its factorization.

305274524240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242220 (or 1242214 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 38.

Adding to 305274524240 its reverse (42425472503), we get a palindrome (347699996743).

The spelling of 305274524240 in words is "three hundred five billion, two hundred seventy-four million, five hundred twenty-four thousand, two hundred forty".