28941444 has 36 divisors (see below), whose sum is σ = 83609344. Its totient is φ = 8268912.

The previous prime is 28941439. The next prime is 28941469. The reversal of 28941444 is 44414982.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28941399 and 28941408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57172 + ... + 57675.

Almost surely, 2^28941444 is an apocalyptic number.

It is an amenable number.

28941444 is an abundant number, since it is smaller than the sum of its proper divisors (54667900).

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

28941444 is a wasteful number, since it uses less digits than its factorization.

28941444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114864 (or 114859 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 28941444 is about 5379.7252717959. The cubic root of 28941444 is about 307.0247586550.

The spelling of 28941444 in words is "twenty-eight million, nine hundred forty-one thousand, four hundred forty-four".