28788370 has 32 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 10476480.

The previous prime is 28788349. The next prime is 28788373. The reversal of 28788370 is 7388782.

It is not an unprimeable number, because it can be changed into a prime (28788373) by changing a digit.

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, 7671 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^28788370 is an apocalyptic number.

28788370 is a deficient number, since it is larger than the sum of its proper divisors (27820910).

28788370 is a wasteful number, since it uses less digits than its factorization.

28788370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 28788370 is about 5365.4794753125. The cubic root of 28788370 is about 306.4825073157.

The spelling of 28788370 in words is "twenty-eight million, seven hundred eighty-eight thousand, three hundred seventy".