28850418 has 96 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 8781696.

The previous prime is 28850399. The next prime is 28850443. The reversal of 28850418 is 81405882.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 324118 + ... + 324206.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^28850418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28850418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35380800).

28850418 is an abundant number, since it is smaller than the sum of its proper divisors (41911182).

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

28850418 is a wasteful number, since it uses less digits than its factorization.

28850418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 28850418 is about 5371.2585117456. The cubic root of 28850418 is about 306.7025380744.

The spelling of 28850418 in words is "twenty-eight million, eight hundred fifty thousand, four hundred eighteen".