28930555 has 8 divisors (see below), whose sum is σ = 34794432. Its totient is φ = 23092608.

The previous prime is 28930501. The next prime is 28930567. The reversal of 28930555 is 55503982.

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 28930555 - 2¹³ = 28922363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3934 + ... + 8563.

It is an arithmetic number, because the mean of its divisors is an integer number (4349304).

Almost surely, 2^28930555 is an apocalyptic number.

28930555 is a deficient number, since it is larger than the sum of its proper divisors (5863877).

28930555 is a wasteful number, since it uses less digits than its factorization.

28930555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12965.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 28930555 is about 5378.7131360577. The cubic root of 28930555 is about 306.9862485750.

The spelling of 28930555 in words is "twenty-eight million, nine hundred thirty thousand, five hundred fifty-five".