28851018 has 32 divisors (see below), whose sum is σ = 68075520. Its totient is φ = 7976880.

The previous prime is 28851013. The next prime is 28851029. The reversal of 28851018 is 81015882.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28851018.

It is not an unprimeable number, because it can be changed into a prime (28851013) 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, 9778 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (2127360).

Almost surely, 2^28851018 is an apocalyptic number.

28851018 is an abundant number, since it is smaller than the sum of its proper divisors (39224502).

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

28851018 is a wasteful number, since it uses less digits than its factorization.

28851018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22202.

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 28851018 is about 5371.3143642874. The cubic root of 28851018 is about 306.7046642163.

The spelling of 28851018 in words is "twenty-eight million, eight hundred fifty-one thousand, eighteen".