28342555 has 16 divisors (see below), whose sum is σ = 36454464. Its totient is φ = 21098880.

The previous prime is 28342529. The next prime is 28342571. The reversal of 28342555 is 55524382.

It is not a de Polignac number, because 28342555 - 2⁷ = 28342427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28342555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (2278404).

Almost surely, 2^28342555 is an apocalyptic number.

28342555 is a deficient number, since it is larger than the sum of its proper divisors (8111909).

28342555 is a wasteful number, since it uses less digits than its factorization.

28342555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6726.

The product of its digits is 48000, while the sum is 34.

The square root of 28342555 is about 5323.7726285032. The cubic root of 28342555 is about 304.8922130996.

The spelling of 28342555 in words is "twenty-eight million, three hundred forty-two thousand, five hundred fifty-five".