28707953 has 6 divisors (see below), whose sum is σ = 29664882. Its totient is φ = 27780960.

The previous prime is 28707947. The next prime is 28707977. The reversal of 28707953 is 35970782.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 277729 = 5332^2 + 527^2 .

It is not a de Polignac number, because 28707953 - 2¹⁶ = 28642417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28707953.

It is not an unprimeable number, because it can be changed into a prime (28707923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13976 + ... + 15897.

It is an arithmetic number, because the mean of its divisors is an integer number (4944147).

Almost surely, 2^28707953 is an apocalyptic number.

It is an amenable number.

28707953 is a deficient number, since it is larger than the sum of its proper divisors (956929).

28707953 is an equidigital number, since it uses as much as digits as its factorization.

28707953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29935 (or 29904 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 28707953 is about 5357.9803097809. The cubic root of 28707953 is about 306.1968666394.

The spelling of 28707953 in words is "twenty-eight million, seven hundred seven thousand, nine hundred fifty-three".