28532448 has 72 divisors (see below), whose sum is σ = 92737008. Its totient is φ = 8151552.

The previous prime is 28532447. The next prime is 28532461. The reversal of 28532448 is 84423582.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28532447) 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, 5061 + ... + 9092.

It is an arithmetic number, because the mean of its divisors is an integer number (1288014).

Almost surely, 2^28532448 is an apocalyptic number.

28532448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28532448 is an abundant number, since it is smaller than the sum of its proper divisors (64204560).

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

28532448 is a wasteful number, since it uses less digits than its factorization.

28532448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176 (or 14165 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28532448 is about 5341.5772951442. The cubic root of 28532448 is about 305.5716163801.

The spelling of 28532448 in words is "twenty-eight million, five hundred thirty-two thousand, four hundred forty-eight".