28057323 has 16 divisors (see below), whose sum is σ = 42831360. Its totient is φ = 16003776.

The previous prime is 28057307. The next prime is 28057343. The reversal of 28057323 is 32375082.

It is not a de Polignac number, because 28057323 - 2⁴ = 28057307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28057343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17218 + ... + 18776.

It is an arithmetic number, because the mean of its divisors is an integer number (2676960).

Almost surely, 2^28057323 is an apocalyptic number.

28057323 is a deficient number, since it is larger than the sum of its proper divisors (14774037).

28057323 is a wasteful number, since it uses less digits than its factorization.

28057323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 28057323 is about 5296.9163670951. The cubic root of 28057323 is about 303.8659778289.

The spelling of 28057323 in words is "twenty-eight million, fifty-seven thousand, three hundred twenty-three".