28501264 has 40 divisors (see below), whose sum is σ = 61165728. Its totient is φ = 12756480.

The previous prime is 28501241. The next prime is 28501327. The reversal of 28501264 is 46210582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10584 + ... + 13000.

Almost surely, 2^28501264 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 28501264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30582864).

28501264 is an abundant number, since it is smaller than the sum of its proper divisors (32664464).

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

28501264 is a wasteful number, since it uses less digits than its factorization.

28501264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 28501264 is about 5338.6575091497. The cubic root of 28501264 is about 305.4602528910.

It can be divided in two parts, 2850 and 1264, that added together give a palindrome (4114).

The spelling of 28501264 in words is "twenty-eight million, five hundred one thousand, two hundred sixty-four".