28480646 has 8 divisors (see below), whose sum is σ = 42833664. Its totient is φ = 14202760.

The previous prime is 28480619. The next prime is 28480651. The reversal of 28480646 is 64608482.

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 2×28480646² = 1622294393154632, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 17825 + ... + 19356.

It is an arithmetic number, because the mean of its divisors is an integer number (5354208).

Almost surely, 2^28480646 is an apocalyptic number.

28480646 is a deficient number, since it is larger than the sum of its proper divisors (14353018).

28480646 is a wasteful number, since it uses less digits than its factorization.

28480646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37566.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 28480646 is about 5336.7261499912. The cubic root of 28480646 is about 305.3865778104.

The spelling of 28480646 in words is "twenty-eight million, four hundred eighty thousand, six hundred forty-six".