28180083 has 16 divisors (see below), whose sum is σ = 40561920. Its totient is φ = 17349024.

The previous prime is 28180063. The next prime is 28180091. The reversal of 28180083 is 38008182.

Added to its reverse (38008182) it gives a triangular number (66188265 = T₁₁₅₀₅).

It is not a de Polignac number, because 28180083 - 2¹⁰ = 28179059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28180083.

It is not an unprimeable number, because it can be changed into a prime (28180013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5041 + ... + 9042.

It is an arithmetic number, because the mean of its divisors is an integer number (2535120).

Almost surely, 2^28180083 is an apocalyptic number.

28180083 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28180083 is a deficient number, since it is larger than the sum of its proper divisors (12381837).

28180083 is a wasteful number, since it uses less digits than its factorization.

28180083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14138.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28180083 is about 5308.4915936639. The cubic root of 28180083 is about 304.3085041955.

Adding to 28180083 its reverse (38008182), we get a triangular number (66188265 = T₁₁₅₀₅).

The spelling of 28180083 in words is "twenty-eight million, one hundred eighty thousand, eighty-three".