28899612 has 144 divisors (see below), whose sum is σ = 89886720. Its totient is φ = 8001504.

The previous prime is 28899601. The next prime is 28899613. The reversal of 28899612 is 21699882.

28899612 is a `hidden beast` number, since 28 + 8 + 9 + 9 + 612 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28899613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227493 + ... + 227619.

Almost surely, 2^28899612 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 28899612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44943360).

28899612 is an abundant number, since it is smaller than the sum of its proper divisors (60987108).

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

28899612 is a wasteful number, since it uses less digits than its factorization.

28899612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 182 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 28899612 is about 5375.8359349965. The cubic root of 28899612 is about 306.8767626685.

The spelling of 28899612 in words is "twenty-eight million, eight hundred ninety-nine thousand, six hundred twelve".