77816282 has 8 divisors (see below), whose sum is σ = 116783316. Its totient is φ = 38888512.

The previous prime is 77816257. The next prime is 77816287. The reversal of 77816282 is 28261877.

It can be written as a sum of positive squares in 2 ways, for example, as 77810041 + 6241 = 8821^2 + 79^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×77816282³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (77816287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4223 + ... + 13170.

Almost surely, 2^77816282 is an apocalyptic number.

77816282 is a deficient number, since it is larger than the sum of its proper divisors (38967034).

77816282 is a wasteful number, since it uses less digits than its factorization.

77816282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19632.

The product of its digits is 75264, while the sum is 41.

The square root of 77816282 is about 8821.3537509840. The cubic root of 77816282 is about 426.9301496201.

The spelling of 77816282 in words is "seventy-seven million, eight hundred sixteen thousand, two hundred eighty-two".