28494953 has 4 divisors (see below), whose sum is σ = 29733888. Its totient is φ = 27256020.

The previous prime is 28494943. The next prime is 28494971. The reversal of 28494953 is 35949482.

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 28494953 - 2⁴ = 28494937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28494913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619433 + ... + 619478.

It is an arithmetic number, because the mean of its divisors is an integer number (7433472).

Almost surely, 2^28494953 is an apocalyptic number.

28494953 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28494953 is a deficient number, since it is larger than the sum of its proper divisors (1238935).

28494953 is a wasteful number, since it uses less digits than its factorization.

28494953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238934.

The product of its digits is 311040, while the sum is 44.

The square root of 28494953 is about 5338.0664102276. The cubic root of 28494953 is about 305.4377053301.

The spelling of 28494953 in words is "twenty-eight million, four hundred ninety-four thousand, nine hundred fifty-three".