28799355 has 16 divisors (see below), whose sum is σ = 49623840. Its totient is φ = 14178048.

The previous prime is 28799333. The next prime is 28799359. The reversal of 28799355 is 55399782.

It is a happy number.

It is not a de Polignac number, because 28799355 - 2⁹ = 28798843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28799359) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 73650 + ... + 74039.

It is an arithmetic number, because the mean of its divisors is an integer number (3101490).

Almost surely, 2^28799355 is an apocalyptic number.

28799355 is a deficient number, since it is larger than the sum of its proper divisors (20824485).

28799355 is a wasteful number, since it uses less digits than its factorization.

28799355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147710.

The product of its digits is 680400, while the sum is 48.

The square root of 28799355 is about 5366.5030513361. The cubic root of 28799355 is about 306.5214846552.

The spelling of 28799355 in words is "twenty-eight million, seven hundred ninety-nine thousand, three hundred fifty-five".