305012 has 6 divisors (see below), whose sum is σ = 533778. Its totient is φ = 152504.

The previous prime is 304981. The next prime is 305017. The reversal of 305012 is 210503.

It can be written as a sum of positive squares in only one way, i.e., 234256 + 70756 = 484^2 + 266^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 304984 and 305002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305017) by changing a digit.

305012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38123 + ... + 38130.

It is an arithmetic number, because the mean of its divisors is an integer number (88963).

2³⁰⁵⁰¹² is an apocalyptic number.

It is an amenable number.

305012 is a deficient number, since it is larger than the sum of its proper divisors (228766).

305012 is a wasteful number, since it uses less digits than its factorization.

305012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76257 (or 76255 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 305012 is about 552.2789150420. The cubic root of 305012 is about 67.3140377566.

Adding to 305012 its reverse (210503), we get a palindrome (515515).

It can be divided in two parts, 30501 and 2, that added together give a palindrome (30503).

The spelling of 305012 in words is "three hundred five thousand, twelve".