28352412 has 36 divisors (see below), whose sum is σ = 78185016. Its totient is φ = 8591520.

The previous prime is 28352393. The next prime is 28352419. The reversal of 28352412 is 21425382.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28352419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35403 + ... + 36194.

It is an arithmetic number, because the mean of its divisors is an integer number (2171806).

Almost surely, 2^28352412 is an apocalyptic number.

28352412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28352412 is an abundant number, since it is smaller than the sum of its proper divisors (49832604).

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

28352412 is a wasteful number, since it uses less digits than its factorization.

28352412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71618 (or 71613 counting only the distinct ones).

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

The square root of 28352412 is about 5324.6983013125. The cubic root of 28352412 is about 304.9275542349.

Adding to 28352412 its reverse (21425382), we get a palindrome (49777794).

The spelling of 28352412 in words is "twenty-eight million, three hundred fifty-two thousand, four hundred twelve".