28519488 has 84 divisors (see below), whose sum is σ = 83078320. Its totient is φ = 9351936.

The previous prime is 28519451. The next prime is 28519507. The reversal of 28519488 is 88491582.

It is a happy number.

It is a super-2 number, since 2×28519488² = 1626722391564288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38223 + ... + 38961.

Almost surely, 2^28519488 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 28519488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41539160).

28519488 is an abundant number, since it is smaller than the sum of its proper divisors (54558832).

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

28519488 is a wasteful number, since it uses less digits than its factorization.

28519488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 811 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 28519488 is about 5340.3640325356. The cubic root of 28519488 is about 305.5253438241.

The spelling of 28519488 in words is "twenty-eight million, five hundred nineteen thousand, four hundred eighty-eight".