28836612 has 72 divisors (see below), whose sum is σ = 85368192. Its totient is φ = 8035200.

The previous prime is 28836589. The next prime is 28836631. The reversal of 28836612 is 21663882.

28836612 is a `hidden beast` number, since 2 + 8 + 8 + 36 + 612 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8937 + ... + 11727.

Almost surely, 2^28836612 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 28836612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42684096).

28836612 is an abundant number, since it is smaller than the sum of its proper divisors (56531580).

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

28836612 is a wasteful number, since it uses less digits than its factorization.

28836612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2844 counting only the distinct ones).

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

The square root of 28836612 is about 5369.9731842906. The cubic root of 28836612 is about 306.6536074044.

The spelling of 28836612 in words is "twenty-eight million, eight hundred thirty-six thousand, six hundred twelve".