305242722 has 64 divisors (see below), whose sum is σ = 698941440. Its totient is φ = 98694288.

The previous prime is 305242699. The next prime is 305242723. The reversal of 305242722 is 227242503.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (305242723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321853 + ... + 322799.

It is an arithmetic number, because the mean of its divisors is an integer number (10920960).

Almost surely, 2^305242722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305242722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349470720).

305242722 is an abundant number, since it is smaller than the sum of its proper divisors (393698718).

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

305242722 is a wasteful number, since it uses less digits than its factorization.

305242722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 305242722 is about 17471.1969252252. The cubic root of 305242722 is about 673.3100639499.

The spelling of 305242722 in words is "three hundred five million, two hundred forty-two thousand, seven hundred twenty-two".