28180486 has 8 divisors (see below), whose sum is σ = 42331680. Its totient is φ = 14069928.

The previous prime is 28180459. The next prime is 28180487. The reversal of 28180486 is 68408182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28180487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8361 + ... + 11236.

It is an arithmetic number, because the mean of its divisors is an integer number (5291460).

Almost surely, 2^28180486 is an apocalyptic number.

28180486 is a deficient number, since it is larger than the sum of its proper divisors (14151194).

28180486 is a wasteful number, since it uses less digits than its factorization.

28180486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20318.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28180486 is about 5308.5295515802. The cubic root of 28180486 is about 304.3099548151.

The spelling of 28180486 in words is "twenty-eight million, one hundred eighty thousand, four hundred eighty-six".