28285950 has 192 divisors, whose sum is σ = 91422720. Its totient is φ = 5616000.

The previous prime is 28285949. The next prime is 28285951. The reversal of 28285950 is 5958282.

It is an interprime number because it is at equal distance from previous prime (28285949) and next prime (28285951).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28285899 and 28285908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 358011 + ... + 358089.

It is an arithmetic number, because the mean of its divisors is an integer number (476160).

Almost surely, 2^28285950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28285950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45711360).

28285950 is an abundant number, since it is smaller than the sum of its proper divisors (63136770).

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

28285950 is a wasteful number, since it uses less digits than its factorization.

28285950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 28285950 is about 5318.4537226529. The cubic root of 28285950 is about 304.6891036076.

It can be divided in two parts, 2828 and 5950, that added together give a palindrome (8778).

The spelling of 28285950 in words is "twenty-eight million, two hundred eighty-five thousand, nine hundred fifty".