305572420 has 48 divisors (see below), whose sum is σ = 666792000. Its totient is φ = 117488000.

The previous prime is 305572409. The next prime is 305572429. The reversal of 305572420 is 24275503.

It is not an unprimeable number, because it can be changed into a prime (305572429) 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, 144531 + ... + 146629.

It is an arithmetic number, because the mean of its divisors is an integer number (13891500).

Almost surely, 2^305572420 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 305572420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333396000).

305572420 is an abundant number, since it is smaller than the sum of its proper divisors (361219580).

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

305572420 is a wasteful number, since it uses less digits than its factorization.

305572420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 305572420 is about 17480.6298513526. The cubic root of 305572420 is about 673.5523947123.

The spelling of 305572420 in words is "three hundred five million, five hundred seventy-two thousand, four hundred twenty".