28733952 has 80 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 8835072.

The previous prime is 28733951. The next prime is 28733963. The reversal of 28733952 is 25933782.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 28733952.

It is not an unprimeable number, because it can be changed into a prime (28733951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19249 + ... + 20687.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^28733952 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 28733952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41247360).

28733952 is an abundant number, since it is smaller than the sum of its proper divisors (53760768).

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

28733952 is a wasteful number, since it uses less digits than its factorization.

28733952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1457 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 28733952 is about 5360.4059547762. The cubic root of 28733952 is about 306.2892732086.

The spelling of 28733952 in words is "twenty-eight million, seven hundred thirty-three thousand, nine hundred fifty-two".