28449612 has 36 divisors (see below), whose sum is σ = 75701080. Its totient is φ = 8983872.

The previous prime is 28449611. The next prime is 28449647. The reversal of 28449612 is 21694482.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28449611) 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, 20113 + ... + 21480.

Almost surely, 2^28449612 is an apocalyptic number.

It is an amenable number.

28449612 is an abundant number, since it is smaller than the sum of its proper divisors (47251468).

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

28449612 is a wasteful number, since it uses less digits than its factorization.

28449612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41622 (or 41617 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28449612 is about 5333.8177696656. The cubic root of 28449612 is about 305.2756157734.

The spelling of 28449612 in words is "twenty-eight million, four hundred forty-nine thousand, six hundred twelve".