81070882 has 8 divisors (see below), whose sum is σ = 122810652. Its totient is φ = 40134000.

The previous prime is 81070861. The next prime is 81070903. The reversal of 81070882 is 28807018.

It is an interprime number because it is at equal distance from previous prime (81070861) and next prime (81070903).

It can be written as a sum of positive squares in 2 ways, for example, as 68046001 + 13024881 = 8249^2 + 3609^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 200469 + ... + 200872.

Almost surely, 2^81070882 is an apocalyptic number.

81070882 is a deficient number, since it is larger than the sum of its proper divisors (41739770).

81070882 is a wasteful number, since it uses less digits than its factorization.

81070882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401444.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 81070882 is about 9003.9370277674. The cubic root of 81070882 is about 432.8010435967.

The spelling of 81070882 in words is "eighty-one million, seventy thousand, eight hundred eighty-two".