28124448 has 48 divisors (see below), whose sum is σ = 80541216. Its totient is φ = 8522240.

The previous prime is 28124441. The next prime is 28124479. The reversal of 28124448 is 84442182.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28124441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12261 + ... + 14372.

It is an arithmetic number, because the mean of its divisors is an integer number (1677942).

Almost surely, 2^28124448 is an apocalyptic number.

It is an amenable number.

28124448 is an abundant number, since it is smaller than the sum of its proper divisors (52416768).

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

28124448 is a wasteful number, since it uses less digits than its factorization.

28124448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26657 (or 26649 counting only the distinct ones).

The product of its digits is 16384, while the sum is 33.

The square root of 28124448 is about 5303.2488155847. The cubic root of 28124448 is about 304.1081102098.

It can be divided in two parts, 2812 and 4448, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 28124448 in words is "twenty-eight million, one hundred twenty-four thousand, four hundred forty-eight".