28360444 has 24 divisors (see below), whose sum is σ = 57028608. Its totient is φ = 12088560.

The previous prime is 28360439. The next prime is 28360481. The reversal of 28360444 is 44406382.

It is a hoax number, since the sum of its digits (31) 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 in 7 ways as a sum of consecutive naturals, for example, 2697 + ... + 7999.

It is an arithmetic number, because the mean of its divisors is an integer number (2376192).

Almost surely, 2^28360444 is an apocalyptic number.

It is an amenable number.

28360444 is an abundant number, since it is smaller than the sum of its proper divisors (28668164).

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

28360444 is a wasteful number, since it uses less digits than its factorization.

28360444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505 (or 5503 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 28360444 is about 5325.4524690396. The cubic root of 28360444 is about 304.9563459873.

The spelling of 28360444 in words is "twenty-eight million, three hundred sixty thousand, four hundred forty-four".