28029612 has 48 divisors (see below), whose sum is σ = 70771680. Its totient is φ = 8583168.

The previous prime is 28029601. The next prime is 28029623. The reversal of 28029612 is 21692082.

It is an interprime number because it is at equal distance from previous prime (28029601) and next prime (28029623).

It is a self number, because there is not a number n which added to its sum of digits gives 28029612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54814 + ... + 55322.

It is an arithmetic number, because the mean of its divisors is an integer number (1474410).

Almost surely, 2^28029612 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 28029612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35385840).

28029612 is an abundant number, since it is smaller than the sum of its proper divisors (42742068).

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

28029612 is a wasteful number, since it uses less digits than its factorization.

28029612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28029612 is about 5294.2999537238. The cubic root of 28029612 is about 303.7659064643.

It can be divided in two parts, 280 and 29612, that added together give a palindrome (29892).

The spelling of 28029612 in words is "twenty-eight million, twenty-nine thousand, six hundred twelve".