28169352 has 48 divisors (see below), whose sum is σ = 76826880. Its totient is φ = 9324000.

The previous prime is 28169347. The next prime is 28169363. The reversal of 28169352 is 25396182.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9577 + ... + 12167.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^28169352 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 28169352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38413440).

28169352 is an abundant number, since it is smaller than the sum of its proper divisors (48657528).

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

28169352 is a wasteful number, since it uses less digits than its factorization.

28169352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754 (or 2747 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28169352 is about 5307.4807583259. The cubic root of 28169352 is about 304.2698723108.

The spelling of 28169352 in words is "twenty-eight million, one hundred sixty-nine thousand, three hundred fifty-two".