307005005420 has 96 divisors (see below), whose sum is σ = 689196211200. Its totient is φ = 114531715584.

The previous prime is 307005005407. The next prime is 307005005429. The reversal of 307005005420 is 24500500703.

It is a self number, because there is not a number n which added to its sum of digits gives 307005005420.

It is not an unprimeable number, because it can be changed into a prime (307005005429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60923261 + ... + 60928299.

It is an arithmetic number, because the mean of its divisors is an integer number (7179127200).

Almost surely, 2^307005005420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307005005420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344598105600).

307005005420 is an abundant number, since it is smaller than the sum of its proper divisors (382191205780).

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

307005005420 is a wasteful number, since it uses less digits than its factorization.

307005005420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527 (or 7525 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The spelling of 307005005420 in words is "three hundred seven billion, five million, five thousand, four hundred twenty".