28989792 has 192 divisors, whose sum is σ = 95256000. Its totient is φ = 8515584.

The previous prime is 28989791. The next prime is 28989799. The reversal of 28989792 is 29798982.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28989791) 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, 325684 + ... + 325772.

It is an arithmetic number, because the mean of its divisors is an integer number (496125).

Almost surely, 2^28989792 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 28989792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47628000).

28989792 is an abundant number, since it is smaller than the sum of its proper divisors (66266208).

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

28989792 is a wasteful number, since it uses less digits than its factorization.

28989792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 136 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 28989792 is about 5384.2169347083. The cubic root of 28989792 is about 307.1956298206.

The spelling of 28989792 in words is "twenty-eight million, nine hundred eighty-nine thousand, seven hundred ninety-two".