28504464 has 40 divisors (see below), whose sum is σ = 74578560. Its totient is φ = 9379968.

The previous prime is 28504459. The next prime is 28504499. The reversal of 28504464 is 46440582.

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, 34 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (1864464).

Almost surely, 2^28504464 is an apocalyptic number.

28504464 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 28504464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37289280).

28504464 is an abundant number, since it is smaller than the sum of its proper divisors (46074096).

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

28504464 is a wasteful number, since it uses less digits than its factorization.

28504464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607 (or 7601 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 28504464 is about 5338.9572015516. The cubic root of 28504464 is about 305.4716843867.

The spelling of 28504464 in words is "twenty-eight million, five hundred four thousand, four hundred sixty-four".