28656446 has 32 divisors (see below), whose sum is σ = 55695360. Its totient is φ = 10738656.

The previous prime is 28656409. The next prime is 28656451. The reversal of 28656446 is 64465682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (1740480).

Almost surely, 2^28656446 is an apocalyptic number.

28656446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28656446 is a deficient number, since it is larger than the sum of its proper divisors (27038914).

28656446 is a wasteful number, since it uses less digits than its factorization.

28656446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328.

The product of its digits is 276480, while the sum is 41.

The square root of 28656446 is about 5353.1715832766. The cubic root of 28656446 is about 306.0136337497.

The spelling of 28656446 in words is "twenty-eight million, six hundred fifty-six thousand, four hundred forty-six".