28350516 has 48 divisors (see below), whose sum is σ = 70136640. Its totient is φ = 8897280.

The previous prime is 28350433. The next prime is 28350521. The reversal of 28350516 is 61505382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13275 + ... + 15261.

It is an arithmetic number, because the mean of its divisors is an integer number (1461180).

Almost surely, 2^28350516 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 28350516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35068320).

28350516 is an abundant number, since it is smaller than the sum of its proper divisors (41786124).

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

28350516 is a wasteful number, since it uses less digits than its factorization.

28350516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 28350516 is about 5324.5202600798. The cubic root of 28350516 is about 304.9207569822.

Adding to 28350516 its reverse (61505382), we get a palindrome (89855898).

The spelling of 28350516 in words is "twenty-eight million, three hundred fifty thousand, five hundred sixteen".