28850538 has 16 divisors (see below), whose sum is σ = 57901536. Its totient is φ = 9583440.

The previous prime is 28850509. The next prime is 28850543. The reversal of 28850538 is 83505882.

It is a junction number, because it is equal to n+sod(n) for n = 28850496 and 28850505.

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 7 ways as a sum of consecutive naturals, for example, 6448 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (3618846).

Almost surely, 2^28850538 is an apocalyptic number.

28850538 is an abundant number, since it is smaller than the sum of its proper divisors (29050998).

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

28850538 is a wasteful number, since it uses less digits than its factorization.

28850538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16709.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 28850538 is about 5371.2696823005. The cubic root of 28850538 is about 306.7029633052.

The spelling of 28850538 in words is "twenty-eight million, eight hundred fifty thousand, five hundred thirty-eight".