28541916 has 96 divisors (see below), whose sum is σ = 82555200. Its totient is φ = 8467200.

The previous prime is 28541897. The next prime is 28541921. The reversal of 28541916 is 61914582.

28541916 is a `hidden beast` number, since 28 + 541 + 91 + 6 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

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, 40366 + ... + 41066.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^28541916 is an apocalyptic number.

28541916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28541916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41277600).

28541916 is an abundant number, since it is smaller than the sum of its proper divisors (54013284).

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

28541916 is a wasteful number, since it uses less digits than its factorization.

28541916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 748 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 28541916 is about 5342.4634767118. The cubic root of 28541916 is about 305.6054121964.

The spelling of 28541916 in words is "twenty-eight million, five hundred forty-one thousand, nine hundred sixteen".