28770355 has 16 divisors (see below), whose sum is σ = 36396864. Its totient is φ = 21788800.

The previous prime is 28770353. The next prime is 28770377. The reversal of 28770355 is 55307782.

It is not a de Polignac number, because 28770355 - 2¹ = 28770353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28770353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10377 + ... + 12853.

It is an arithmetic number, because the mean of its divisors is an integer number (2274804).

Almost surely, 2^28770355 is an apocalyptic number.

28770355 is a deficient number, since it is larger than the sum of its proper divisors (7626509).

28770355 is a wasteful number, since it uses less digits than its factorization.

28770355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 28770355 is about 5363.8004250718. The cubic root of 28770355 is about 306.4185644288.

The spelling of 28770355 in words is "twenty-eight million, seven hundred seventy thousand, three hundred fifty-five".