28751652 has 48 divisors (see below), whose sum is σ = 75962880. Its totient is φ = 9401184.

The previous prime is 28751651. The next prime is 28751659. The reversal of 28751652 is 25615782.

It is a happy number.

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 (28751651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3213 + ... + 8235.

It is an arithmetic number, because the mean of its divisors is an integer number (1582560).

Almost surely, 2^28751652 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 28751652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37981440).

28751652 is an abundant number, since it is smaller than the sum of its proper divisors (47211228).

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

28751652 is a wasteful number, since it uses less digits than its factorization.

28751652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089 (or 5081 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 28751652 is about 5362.0566949632. The cubic root of 28751652 is about 306.3521512903.

It can be divided in two parts, 28751 and 652, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 28751652 in words is "twenty-eight million, seven hundred fifty-one thousand, six hundred fifty-two".