28044612 has 36 divisors (see below), whose sum is σ = 71695260. Its totient is φ = 9242112.

The previous prime is 28044607. The next prime is 28044617. The reversal of 28044612 is 21644082.

28044612 is a `hidden beast` number, since 2 + 8 + 0 + 44 + 612 = 666.

It is an interprime number because it is at equal distance from previous prime (28044607) and next prime (28044617).

It can be written as a sum of positive squares in 2 ways, for example, as 15256836 + 12787776 = 3906^2 + 3576^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28044617) 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, 1173 + ... + 7580.

It is an arithmetic number, because the mean of its divisors is an integer number (1991535).

Almost surely, 2^28044612 is an apocalyptic number.

It is an amenable number.

28044612 is an abundant number, since it is smaller than the sum of its proper divisors (43650648).

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

28044612 is a wasteful number, since it uses less digits than its factorization.

28044612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852 (or 8847 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28044612 is about 5295.7163821338. The cubic root of 28044612 is about 303.8200834069.

Adding to 28044612 its reverse (21644082), we get a palindrome (49688694).

The spelling of 28044612 in words is "twenty-eight million, forty-four thousand, six hundred twelve".