28530379 has 8 divisors (see below), whose sum is σ = 29006352. Its totient is φ = 28058400.

The previous prime is 28530361. The next prime is 28530391. The reversal of 28530379 is 97303582.

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 28530379 - 2⁵ = 28530347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28530349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15597 + ... + 17329.

It is an arithmetic number, because the mean of its divisors is an integer number (3625794).

Almost surely, 2^28530379 is an apocalyptic number.

28530379 is a deficient number, since it is larger than the sum of its proper divisors (475973).

28530379 is a wasteful number, since it uses less digits than its factorization.

28530379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28530379 is about 5341.3836222462. The cubic root of 28530379 is about 305.5642301351.

The spelling of 28530379 in words is "twenty-eight million, five hundred thirty thousand, three hundred seventy-nine".