28920753 has 8 divisors (see below), whose sum is σ = 42845600. Its totient is φ = 19280484.

The previous prime is 28920719. The next prime is 28920761. The reversal of 28920753 is 35702982.

It is a happy number.

It is not a de Polignac number, because 28920753 - 2⁸ = 28920497 is a prime.

It is a super-3 number, since 3×28920753³ (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 (28920953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535543 + ... + 535596.

It is an arithmetic number, because the mean of its divisors is an integer number (5355700).

Almost surely, 2^28920753 is an apocalyptic number.

It is an amenable number.

28920753 is a deficient number, since it is larger than the sum of its proper divisors (13924847).

28920753 is a wasteful number, since it uses less digits than its factorization.

28920753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071148 (or 1071142 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28920753 is about 5377.8018743721. The cubic root of 28920753 is about 306.9515745184.

The spelling of 28920753 in words is "twenty-eight million, nine hundred twenty thousand, seven hundred fifty-three".