76304420 has 12 divisors (see below), whose sum is σ = 160239324. Its totient is φ = 30521760.

The previous prime is 76304419. The next prime is 76304429. The reversal of 76304420 is 2440367.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 63616576 = 3562^2 + 7976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 76304420.

It is not an unprimeable number, because it can be changed into a prime (76304429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1907591 + ... + 1907630.

It is an arithmetic number, because the mean of its divisors is an integer number (13353277).

Almost surely, 2^76304420 is an apocalyptic number.

It is an amenable number.

76304420 is an abundant number, since it is smaller than the sum of its proper divisors (83934904).

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

76304420 is a wasteful number, since it uses less digits than its factorization.

76304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815230 (or 3815228 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 76304420 is about 8735.2401226297. The cubic root of 76304420 is about 424.1471617451.

Adding to 76304420 its reverse (2440367), we get a palindrome (78744787).

The spelling of 76304420 in words is "seventy-six million, three hundred four thousand, four hundred twenty".