770304420 has 72 divisors (see below), whose sum is σ = 2353720824. Its totient is φ = 203908608.

The previous prime is 770304397. The next prime is 770304421. The reversal of 770304420 is 24403077.

It can be written as a sum of positive squares in 4 ways, for example, as 232806564 + 537497856 = 15258^2 + 23184^2 .

It is not an unprimeable number, because it can be changed into a prime (770304421) 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 23 ways as a sum of consecutive naturals, for example, 9042 + ... + 40278.

It is an arithmetic number, because the mean of its divisors is an integer number (32690567).

Almost surely, 2^770304420 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 770304420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176860412).

770304420 is an abundant number, since it is smaller than the sum of its proper divisors (1583416404).

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

770304420 is a wasteful number, since it uses less digits than its factorization.

770304420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31389 (or 31384 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 770304420 is about 27754.3585766272. The cubic root of 770304420 is about 916.6864177930.

Adding to 770304420 its reverse (24403077), we get a palindrome (794707497).

The spelling of 770304420 in words is "seven hundred seventy million, three hundred four thousand, four hundred twenty".