28528416 has 192 divisors, whose sum is σ = 97977600. Its totient is φ = 7907328.

The previous prime is 28528387. The next prime is 28528421. The reversal of 28528416 is 61482582.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320500 + ... + 320588.

It is an arithmetic number, because the mean of its divisors is an integer number (510300).

Almost surely, 2^28528416 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 28528416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48988800).

28528416 is an abundant number, since it is smaller than the sum of its proper divisors (69449184).

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

28528416 is a wasteful number, since it uses less digits than its factorization.

28528416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 154 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 28528416 is about 5341.1998651988. The cubic root of 28528416 is about 305.5572219756.

The spelling of 28528416 in words is "twenty-eight million, five hundred twenty-eight thousand, four hundred sixteen".