28071682 has 8 divisors (see below), whose sum is σ = 42201036. Its totient is φ = 14004672.

The previous prime is 28071671. The next prime is 28071689. The reversal of 28071682 is 28617082.

It can be written as a sum of positive squares in 2 ways, for example, as 23049601 + 5022081 = 4801^2 + 2241^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28071689) 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, 14443 + ... + 16270.

Almost surely, 2^28071682 is an apocalyptic number.

28071682 is a deficient number, since it is larger than the sum of its proper divisors (14129354).

28071682 is a wasteful number, since it uses less digits than its factorization.

28071682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31172.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28071682 is about 5298.2716049670. The cubic root of 28071682 is about 303.9178058604.

It can be divided in two parts, 2807 and 1682, that added together give a square (4489 = 67²).

The spelling of 28071682 in words is "twenty-eight million, seventy-one thousand, six hundred eighty-two".