28908792 has 128 divisors (see below), whose sum is σ = 91584000. Its totient is φ = 8379360.

The previous prime is 28908791. The next prime is 28908809. The reversal of 28908792 is 29780982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28908791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1256893 + ... + 1256915.

It is an arithmetic number, because the mean of its divisors is an integer number (715500).

Almost surely, 2^28908792 is an apocalyptic number.

28908792 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28908792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45792000).

28908792 is an abundant number, since it is smaller than the sum of its proper divisors (62675208).

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

28908792 is a wasteful number, since it uses less digits than its factorization.

28908792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 28908792 is about 5376.6896879028. The cubic root of 28908792 is about 306.9092524986.

The spelling of 28908792 in words is "twenty-eight million, nine hundred eight thousand, seven hundred ninety-two".