28510272 has 112 divisors (see below), whose sum is σ = 95829120. Its totient is φ = 8142336.

The previous prime is 28510267. The next prime is 28510283. The reversal of 28510272 is 27201582.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10918 + ... + 13274.

Almost surely, 2^28510272 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 28510272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47914560).

28510272 is an abundant number, since it is smaller than the sum of its proper divisors (67318848).

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

28510272 is a wasteful number, since it uses less digits than its factorization.

28510272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 2369 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28510272 is about 5339.5011002902. The cubic root of 28510272 is about 305.4924303660.

It can be divided in two parts, 28510 and 272, that added together give a palindrome (28782).

The spelling of 28510272 in words is "twenty-eight million, five hundred ten thousand, two hundred seventy-two".