28647352 has 8 divisors (see below), whose sum is σ = 53713800. Its totient is φ = 14323672.

The previous prime is 28647349. The next prime is 28647371. The reversal of 28647352 is 25374682.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28647352² = 1641341553223808, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1790452 + ... + 1790467.

It is an arithmetic number, because the mean of its divisors is an integer number (6714225).

Almost surely, 2^28647352 is an apocalyptic number.

It is an amenable number.

28647352 is a deficient number, since it is larger than the sum of its proper divisors (25066448).

28647352 is a wasteful number, since it uses less digits than its factorization.

28647352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580925 (or 3580921 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 28647352 is about 5352.3221128777. The cubic root of 28647352 is about 305.9812596210.

The spelling of 28647352 in words is "twenty-eight million, six hundred forty-seven thousand, three hundred fifty-two".