28480504 has 32 divisors (see below), whose sum is σ = 58605120. Its totient is φ = 12894336.

The previous prime is 28480493. The next prime is 28480513. The reversal of 28480504 is 40508482.

It is a super-2 number, since 2×28480504² = 1622278216188032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2929 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (1831410).

Almost surely, 2^28480504 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 28480504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29302560).

28480504 is an abundant number, since it is smaller than the sum of its proper divisors (30124616).

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

28480504 is a wasteful number, since it uses less digits than its factorization.

28480504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239 (or 5235 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28480504 is about 5336.7128459380. The cubic root of 28480504 is about 305.3860702731.

Adding to 28480504 its reverse (40508482), we get a palindrome (68988986).

The spelling of 28480504 in words is "twenty-eight million, four hundred eighty thousand, five hundred four".