28573313 has 2 divisors, whose sum is σ = 28573314. Its totient is φ = 28573312.

The previous prime is 28573261. The next prime is 28573319. The reversal of 28573313 is 31337582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27952369 + 620944 = 5287^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 28573313 - 2⁶ = 28573249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28573313.

It is not a weakly prime, because it can be changed into another prime (28573319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14286656 + 14286657.

It is an arithmetic number, because the mean of its divisors is an integer number (14286657).

Almost surely, 2^28573313 is an apocalyptic number.

It is an amenable number.

28573313 is a deficient number, since it is larger than the sum of its proper divisors (1).

28573313 is an equidigital number, since it uses as much as digits as its factorization.

28573313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 28573313 is about 5345.4011074942. The cubic root of 28573313 is about 305.7174296351.

The spelling of 28573313 in words is "twenty-eight million, five hundred seventy-three thousand, three hundred thirteen".