76287220 has 12 divisors (see below), whose sum is σ = 160203204. Its totient is φ = 30514880.

The previous prime is 76287199. The next prime is 76287221. The reversal of 76287220 is 2278267.

It can be written as a sum of positive squares in 2 ways, for example, as 9897316 + 66389904 = 3146^2 + 8148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76287221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1907161 + ... + 1907200.

It is an arithmetic number, because the mean of its divisors is an integer number (13350267).

Almost surely, 2^76287220 is an apocalyptic number.

It is an amenable number.

76287220 is an abundant number, since it is smaller than the sum of its proper divisors (83915984).

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

76287220 is a wasteful number, since it uses less digits than its factorization.

76287220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814370 (or 3814368 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 76287220 is about 8734.2555492726. The cubic root of 76287220 is about 424.1152899374.

It can be divided in two parts, 76 and 287220, that added together give a square (287296 = 536²).

The spelling of 76287220 in words is "seventy-six million, two hundred eighty-seven thousand, two hundred twenty".