612530228 has 12 divisors (see below), whose sum is σ = 1108891140. Its totient is φ = 295704192.

The previous prime is 612530221. The next prime is 612530231. The reversal of 612530228 is 822035216.

It can be written as a sum of positive squares in 2 ways, for example, as 222546724 + 389983504 = 14918^2 + 19748^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 612530228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612530221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2640101 + ... + 2640332.

It is an arithmetic number, because the mean of its divisors is an integer number (92407595).

Almost surely, 2^612530228 is an apocalyptic number.

It is an amenable number.

612530228 is a deficient number, since it is larger than the sum of its proper divisors (496360912).

612530228 is a wasteful number, since it uses less digits than its factorization.

612530228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280466 (or 5280464 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 612530228 is about 24749.3480318169. The cubic root of 612530228 is about 849.2635965674.

The spelling of 612530228 in words is "six hundred twelve million, five hundred thirty thousand, two hundred twenty-eight".