28573361 has 8 divisors (see below), whose sum is σ = 29678760. Its totient is φ = 27485568.

The previous prime is 28573357. The next prime is 28573393. The reversal of 28573361 is 16337582.

It can be written as a sum of positive squares in 4 ways, for example, as 3010225 + 25563136 = 1735^2 + 5056^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28573361 - 2² = 28573357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28573261) 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 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (3709845).

Almost surely, 2^28573361 is an apocalyptic number.

It is an amenable number.

28573361 is a deficient number, since it is larger than the sum of its proper divisors (1105399).

28573361 is an equidigital number, since it uses as much as digits as its factorization.

28573361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8803.

The product of its digits is 30240, while the sum is 35.

The square root of 28573361 is about 5345.4055973331. The cubic root of 28573361 is about 305.7176008254.

The spelling of 28573361 in words is "twenty-eight million, five hundred seventy-three thousand, three hundred sixty-one".