76563220 has 48 divisors (see below), whose sum is σ = 166053888. Its totient is φ = 29635200.

The previous prime is 76563209. The next prime is 76563233. The reversal of 76563220 is 2236567.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108870 + ... + 109570.

It is an arithmetic number, because the mean of its divisors is an integer number (3459456).

Almost surely, 2^76563220 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 76563220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83026944).

76563220 is an abundant number, since it is smaller than the sum of its proper divisors (89490668).

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

76563220 is a wasteful number, since it uses less digits than its factorization.

76563220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 76563220 is about 8750.0411427604. The cubic root of 76563220 is about 424.6261441251.

Adding to 76563220 its reverse (2236567), we get a palindrome (78799787).

The spelling of 76563220 in words is "seventy-six million, five hundred sixty-three thousand, two hundred twenty".