28484456 has 64 divisors (see below), whose sum is σ = 71729280. Its totient is φ = 10241280.

The previous prime is 28484453. The next prime is 28484461. The reversal of 28484456 is 65448482.

It is a super-3 number, since 3×28484456³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28484453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6230 + ... + 9786.

It is an arithmetic number, because the mean of its divisors is an integer number (1120770).

Almost surely, 2^28484456 is an apocalyptic number.

28484456 is a gapful number since it is divisible by the number (26) 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 28484456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35864640).

28484456 is an abundant number, since it is smaller than the sum of its proper divisors (43244824).

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

28484456 is a wasteful number, since it uses less digits than its factorization.

28484456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3590 counting only the distinct ones).

The product of its digits is 245760, while the sum is 41.

The square root of 28484456 is about 5337.0830984724. The cubic root of 28484456 is about 305.4001949053.

It can be divided in two parts, 28 and 484456, that added together give a palindrome (484484).

The spelling of 28484456 in words is "twenty-eight million, four hundred eighty-four thousand, four hundred fifty-six".