28115016 has 96 divisors (see below), whose sum is σ = 77215680. Its totient is φ = 8511360.

The previous prime is 28114987. The next prime is 28115023. The reversal of 28115016 is 61051182.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530446 + ... + 530498.

It is an arithmetic number, because the mean of its divisors is an integer number (804330).

Almost surely, 2^28115016 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 28115016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38607840).

28115016 is an abundant number, since it is smaller than the sum of its proper divisors (49100664).

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

28115016 is a wasteful number, since it uses less digits than its factorization.

28115016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 28115016 is about 5302.3594747999. The cubic root of 28115016 is about 304.0741105096.

Adding to 28115016 its reverse (61051182), we get a palindrome (89166198).

The spelling of 28115016 in words is "twenty-eight million, one hundred fifteen thousand, sixteen".