28618416 has 60 divisors (see below), whose sum is σ = 80461368. Its totient is φ = 9495552.

The previous prime is 28618411. The next prime is 28618433. The reversal of 28618416 is 61481682.

28618416 is a `hidden beast` number, since 28 + 618 + 4 + 16 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28618411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50551 + ... + 51113.

Almost surely, 2^28618416 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 28618416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40230684).

28618416 is an abundant number, since it is smaller than the sum of its proper divisors (51842952).

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

28618416 is a wasteful number, since it uses less digits than its factorization.

28618416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 921 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 28618416 is about 5349.6183041410. The cubic root of 28618416 is about 305.8782034824.

The spelling of 28618416 in words is "twenty-eight million, six hundred eighteen thousand, four hundred sixteen".