28522944 has 84 divisors (see below), whose sum is σ = 85350096. Its totient is φ = 9090048.

The previous prime is 28522943. The next prime is 28522951. The reversal of 28522944 is 44922582.

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 = 28522899 and 28522908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28522943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12172 + ... + 14324.

Almost surely, 2^28522944 is an apocalyptic number.

28522944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28522944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42675048).

28522944 is an abundant number, since it is smaller than the sum of its proper divisors (56827152).

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

28522944 is a wasteful number, since it uses less digits than its factorization.

28522944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194 (or 2181 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28522944 is about 5340.6875961809. The cubic root of 28522944 is about 305.5376845428.

The spelling of 28522944 in words is "twenty-eight million, five hundred twenty-two thousand, nine hundred forty-four".