28487753 has 4 divisors (see below), whose sum is σ = 32557440. Its totient is φ = 24418068.

The previous prime is 28487741. The next prime is 28487803. The reversal of 28487753 is 35778482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28487753 - 2⁶ = 28487689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28487153) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2034833 + ... + 2034846.

It is an arithmetic number, because the mean of its divisors is an integer number (8139360).

Almost surely, 2^28487753 is an apocalyptic number.

It is an amenable number.

28487753 is a deficient number, since it is larger than the sum of its proper divisors (4069687).

28487753 is an equidigital number, since it uses as much as digits as its factorization.

28487753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069686.

The product of its digits is 376320, while the sum is 44.

The square root of 28487753 is about 5337.3919661198. The cubic root of 28487753 is about 305.4119775374.

It can be divided in two parts, 2848 and 7753, that added together give a palindrome (10601).

The spelling of 28487753 in words is "twenty-eight million, four hundred eighty-seven thousand, seven hundred fifty-three".