28075212 has 72 divisors (see below), whose sum is σ = 79951872. Its totient is φ = 8229600.

The previous prime is 28075207. The next prime is 28075231. The reversal of 28075212 is 21257082.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11133 + ... + 13419.

Almost surely, 2^28075212 is an apocalyptic number.

28075212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28075212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39975936).

28075212 is an abundant number, since it is smaller than the sum of its proper divisors (51876660).

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

28075212 is a wasteful number, since it uses less digits than its factorization.

28075212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28075212 is about 5298.6047219999. The cubic root of 28075212 is about 303.9305444973.

The spelling of 28075212 in words is "twenty-eight million, seventy-five thousand, two hundred twelve".