28060992 has 70 divisors (see below), whose sum is σ = 83196938. Its totient is φ = 9351936.

The previous prime is 28060987. The next prime is 28060993. The reversal of 28060992 is 29906082.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 7485696 = 4536^2 + 2736^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28060993) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2478 + ... + 7890.

Almost surely, 2^28060992 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 28060992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41598469).

28060992 is an abundant number, since it is smaller than the sum of its proper divisors (55135946).

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

28060992 is an equidigital number, since it uses as much as digits as its factorization.

28060992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437 (or 5418 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 28060992 is about 5297.2626893519. The cubic root of 28060992 is about 303.8792225670.

The spelling of 28060992 in words is "twenty-eight million, sixty thousand, nine hundred ninety-two".