28660753 has 4 divisors (see below), whose sum is σ = 31266288. Its totient is φ = 26055220.

The previous prime is 28660739. The next prime is 28660781. The reversal of 28660753 is 35706682.

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 28660753 - 2⁹ = 28660241 is a prime.

It is a super-3 number, since 3×28660753³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28660733) 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, 1302751 + ... + 1302772.

It is an arithmetic number, because the mean of its divisors is an integer number (7816572).

Almost surely, 2^28660753 is an apocalyptic number.

It is an amenable number.

28660753 is a deficient number, since it is larger than the sum of its proper divisors (2605535).

28660753 is a wasteful number, since it uses less digits than its factorization.

28660753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605534.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 28660753 is about 5353.5738530443. The cubic root of 28660753 is about 306.0289640375.

The spelling of 28660753 in words is "twenty-eight million, six hundred sixty thousand, seven hundred fifty-three".