28932372 has 144 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 7693056.

The previous prime is 28932353. The next prime is 28932377. The reversal of 28932372 is 27323982.

28932372 is a `hidden beast` number, since 289 + 3 + 2 + 372 = 666.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28932377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 270343 + ... + 270449.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^28932372 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 28932372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44815680).

28932372 is an abundant number, since it is smaller than the sum of its proper divisors (60698988).

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

28932372 is a wasteful number, since it uses less digits than its factorization.

28932372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 185 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 28932372 is about 5378.8820399782. The cubic root of 28932372 is about 306.9926752559.

The spelling of 28932372 in words is "twenty-eight million, nine hundred thirty-two thousand, three hundred seventy-two".