28944373 has 4 divisors (see below), whose sum is σ = 30202848. Its totient is φ = 27685900.

The previous prime is 28944371. The next prime is 28944437. The reversal of 28944373 is 37344982.

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 28944373 - 2¹ = 28944371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28944371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629203 + ... + 629248.

It is an arithmetic number, because the mean of its divisors is an integer number (7550712).

Almost surely, 2^28944373 is an apocalyptic number.

28944373 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28944373 is a deficient number, since it is larger than the sum of its proper divisors (1258475).

28944373 is a wasteful number, since it uses less digits than its factorization.

28944373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258474.

The product of its digits is 145152, while the sum is 40.

The square root of 28944373 is about 5379.9974907057. The cubic root of 28944373 is about 307.0351157192.

The spelling of 28944373 in words is "twenty-eight million, nine hundred forty-four thousand, three hundred seventy-three".