28738850 has 48 divisors (see below), whose sum is σ = 61597248. Its totient is φ = 9771840.

The previous prime is 28738847. The next prime is 28738889. The reversal of 28738850 is 5883782.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28738798 and 28738807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54689 + ... + 55211.

It is an arithmetic number, because the mean of its divisors is an integer number (1283276).

Almost surely, 2^28738850 is an apocalyptic number.

28738850 is an abundant number, since it is smaller than the sum of its proper divisors (32858398).

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

28738850 is a wasteful number, since it uses less digits than its factorization.

28738850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 28738850 is about 5360.8628036912. The cubic root of 28738850 is about 306.3066756138.

The spelling of 28738850 in words is "twenty-eight million, seven hundred thirty-eight thousand, eight hundred fifty".