28488792 has 32 divisors (see below), whose sum is σ = 71354880. Its totient is φ = 9478560.

The previous prime is 28488791. The next prime is 28488793. The reversal of 28488792 is 29788482.

It is an interprime number because it is at equal distance from previous prime (28488791) and next prime (28488793).

It is a super-2 number, since 2×28488792² = 1623222539238528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21213 + ... + 22515.

It is an arithmetic number, because the mean of its divisors is an integer number (2229840).

Almost surely, 2^28488792 is an apocalyptic number.

It is an amenable number.

28488792 is an abundant number, since it is smaller than the sum of its proper divisors (42866088).

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

28488792 is a wasteful number, since it uses less digits than its factorization.

28488792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2219 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 28488792 is about 5337.4892974132. The cubic root of 28488792 is about 305.4156904684.

The spelling of 28488792 in words is "twenty-eight million, four hundred eighty-eight thousand, seven hundred ninety-two".