28946944 has 40 divisors (see below), whose sum is σ = 62300700. Its totient is φ = 13357056.

The previous prime is 28946941. The next prime is 28946977. The reversal of 28946944 is 44964982.

It can be written as a sum of positive squares in 2 ways, for example, as 21977344 + 6969600 = 4688^2 + 2640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28946894 and 28946903.

It is not an unprimeable number, because it can be changed into a prime (28946941) 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, 4482 + ... + 8830.

Almost surely, 2^28946944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28946944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31150350).

28946944 is an abundant number, since it is smaller than the sum of its proper divisors (33353756).

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

28946944 is an equidigital number, since it uses as much as digits as its factorization.

28946944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380 (or 4364 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 28946944 is about 5380.2364260319. The cubic root of 28946944 is about 307.0442063049.

It can be divided in two parts, 28946 and 944, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 28946944 in words is "twenty-eight million, nine hundred forty-six thousand, nine hundred forty-four".