28435212 has 120 divisors (see below), whose sum is σ = 82436816. Its totient is φ = 8491392.

The previous prime is 28435201. The next prime is 28435213. The reversal of 28435212 is 21253482.

It is a super-2 number, since 2×28435212² = 1617122562969888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28435213) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 181038 + ... + 181194.

Almost surely, 2^28435212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28435212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41218408).

28435212 is an abundant number, since it is smaller than the sum of its proper divisors (54001604).

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

28435212 is a wasteful number, since it uses less digits than its factorization.

28435212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 218 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 28435212 is about 5332.4677214213. The cubic root of 28435212 is about 305.2241011779.

Adding to 28435212 its reverse (21253482), we get a palindrome (49688694).

The spelling of 28435212 in words is "twenty-eight million, four hundred thirty-five thousand, two hundred twelve".