28438082 has 8 divisors (see below), whose sum is σ = 42784716. Its totient is φ = 14176512.

The previous prime is 28438063. The next prime is 28438103. The reversal of 28438082 is 28083482.

It can be written as a sum of positive squares in 2 ways, for example, as 28206721 + 231361 = 5311^2 + 481^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20423 + ... + 21770.

Almost surely, 2^28438082 is an apocalyptic number.

28438082 is a deficient number, since it is larger than the sum of its proper divisors (14346634).

28438082 is a wasteful number, since it uses less digits than its factorization.

28438082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42532.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 28438082 is about 5332.7368208079. The cubic root of 28438082 is about 305.2343697104.

The spelling of 28438082 in words is "twenty-eight million, four hundred thirty-eight thousand, eighty-two".