28501484 has 24 divisors (see below), whose sum is σ = 55339200. Its totient is φ = 12734480.

The previous prime is 28501427. The next prime is 28501511. The reversal of 28501484 is 48410582.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28501484.

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, 2894 + ... + 8085.

It is an arithmetic number, because the mean of its divisors is an integer number (2305800).

Almost surely, 2^28501484 is an apocalyptic number.

It is an amenable number.

28501484 is a deficient number, since it is larger than the sum of its proper divisors (26837716).

28501484 is a wasteful number, since it uses less digits than its factorization.

28501484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11053 (or 11051 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 28501484 is about 5338.6781135408. The cubic root of 28501484 is about 305.4610388337.

It can be divided in two parts, 2850 and 1484, that added together give a palindrome (4334).

The spelling of 28501484 in words is "twenty-eight million, five hundred one thousand, four hundred eighty-four".