28770282 has 16 divisors (see below), whose sum is σ = 63934080. Its totient is φ = 9590076.

The previous prime is 28770281. The next prime is 28770283. The reversal of 28770282 is 28207782.

It is an interprime number because it is at equal distance from previous prime (28770281) and next prime (28770283).

It is not an unprimeable number, because it can be changed into a prime (28770281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266338 + ... + 266445.

It is an arithmetic number, because the mean of its divisors is an integer number (3995880).

Almost surely, 2^28770282 is an apocalyptic number.

28770282 is an abundant number, since it is smaller than the sum of its proper divisors (35163798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28770282 is a wasteful number, since it uses less digits than its factorization.

28770282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532794 (or 532788 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 28770282 is about 5363.7936201908. The cubic root of 28770282 is about 306.4183052665.

Subtracting from 28770282 its reverse (28207782), we obtain a square (562500 = 750²).

The spelling of 28770282 in words is "twenty-eight million, seven hundred seventy thousand, two hundred eighty-two".