28678582 has 8 divisors (see below), whose sum is σ = 43073352. Its totient is φ = 14320800.

The previous prime is 28678577. The next prime is 28678583. The reversal of 28678582 is 28587682.

It is a happy number.

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

It is a super-2 number, since 2×28678582² = 1644922131061448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28678583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7219 + ... + 10462.

It is an arithmetic number, because the mean of its divisors is an integer number (5384169).

Almost surely, 2^28678582 is an apocalyptic number.

28678582 is a deficient number, since it is larger than the sum of its proper divisors (14394770).

28678582 is a wasteful number, since it uses less digits than its factorization.

28678582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18494.

The product of its digits is 430080, while the sum is 46.

The square root of 28678582 is about 5355.2387435109. The cubic root of 28678582 is about 306.0924080488.

It can be divided in two parts, 2867 and 8582, that added together give a square (11449 = 107²).

The spelling of 28678582 in words is "twenty-eight million, six hundred seventy-eight thousand, five hundred eighty-two".