76005520 has 60 divisors (see below), whose sum is σ = 183821940. Its totient is φ = 29191680.

The previous prime is 76005499. The next prime is 76005577. The reversal of 76005520 is 2550067.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 34480384 + 41525136 = 5872^2 + 6444^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419830 + ... + 420010.

It is an arithmetic number, because the mean of its divisors is an integer number (3063699).

Almost surely, 2^76005520 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 76005520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91910970).

76005520 is an abundant number, since it is smaller than the sum of its proper divisors (107816420).

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

76005520 is a wasteful number, since it uses less digits than its factorization.

76005520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 76005520 is about 8718.1144750456. The cubic root of 76005520 is about 423.5926133291.

Adding to 76005520 its reverse (2550067), we get a palindrome (78555587).

The spelling of 76005520 in words is "seventy-six million, five thousand, five hundred twenty".