28650373 has 4 divisors (see below), whose sum is σ = 28663020. Its totient is φ = 28637728.

The previous prime is 28650361. The next prime is 28650397. The reversal of 28650373 is 37305682.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10349089 + 18301284 = 3217^2 + 4278^2 .

It is a cyclic number.

It is not a de Polignac number, because 28650373 - 2⁹ = 28649861 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 (28650073) 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, 1888 + ... + 7801.

It is an arithmetic number, because the mean of its divisors is an integer number (7165755).

Almost surely, 2^28650373 is an apocalyptic number.

It is an amenable number.

28650373 is a deficient number, since it is larger than the sum of its proper divisors (12647).

28650373 is an equidigital number, since it uses as much as digits as its factorization.

28650373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12646.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 28650373 is about 5352.6043193944. The cubic root of 28650373 is about 305.9920149710.

The spelling of 28650373 in words is "twenty-eight million, six hundred fifty thousand, three hundred seventy-three".