28443464 has 16 divisors (see below), whose sum is σ = 60950400. Its totient is φ = 12190032.

The previous prime is 28443439. The next prime is 28443469. The reversal of 28443464 is 46434482.

It is not an unprimeable number, because it can be changed into a prime (28443469) 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, 253904 + ... + 254015.

It is an arithmetic number, because the mean of its divisors is an integer number (3809400).

Almost surely, 2^28443464 is an apocalyptic number.

It is an amenable number.

28443464 is an abundant number, since it is smaller than the sum of its proper divisors (32506936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28443464 is a wasteful number, since it uses less digits than its factorization.

28443464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507932 (or 507928 counting only the distinct ones).

The product of its digits is 73728, while the sum is 35.

The square root of 28443464 is about 5333.2414158746. The cubic root of 28443464 is about 305.2536240300.

The spelling of 28443464 in words is "twenty-eight million, four hundred forty-three thousand, four hundred sixty-four".