81876752 has 10 divisors (see below), whose sum is σ = 158636238. Its totient is φ = 40938368.

The previous prime is 81876737. The next prime is 81876763. The reversal of 81876752 is 25767818.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 36772096 = 6716^2 + 6064^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2558633 + ... + 2558664.

Almost surely, 2^81876752 is an apocalyptic number.

It is an amenable number.

81876752 is a deficient number, since it is larger than the sum of its proper divisors (76759486).

81876752 is a wasteful number, since it uses less digits than its factorization.

81876752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117305 (or 5117299 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 81876752 is about 9048.5773467435. The cubic root of 81876752 is about 434.2303773807.

It can be divided in two parts, 81876 and 752, that added together give a palindrome (82628).

The spelling of 81876752 in words is "eighty-one million, eight hundred seventy-six thousand, seven hundred fifty-two".