28126180 has 24 divisors (see below), whose sum is σ = 59266872. Its totient is φ = 11212032.

The previous prime is 28126159. The next prime is 28126181. The reversal of 28126180 is 8162182.

It can be written as a sum of positive squares in 4 ways, for example, as 2985984 + 25140196 = 1728^2 + 5014^2 .

It is not an unprimeable number, because it can be changed into a prime (28126181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4014 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (2469453).

Almost surely, 2^28126180 is an apocalyptic number.

28126180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28126180 is an abundant number, since it is smaller than the sum of its proper divisors (31140692).

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

28126180 is a wasteful number, since it uses less digits than its factorization.

28126180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815 (or 4813 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 28126180 is about 5303.4121091991. The cubic root of 28126180 is about 304.1143527553.

The spelling of 28126180 in words is "twenty-eight million, one hundred twenty-six thousand, one hundred eighty".