306520052 has 12 divisors (see below), whose sum is σ = 541721796. Its totient is φ = 151742400.

The previous prime is 306520037. The next prime is 306520063. The reversal of 306520052 is 250025603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 197233936 + 109286116 = 14044^2 + 10454^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378953 + ... + 379760.

It is an arithmetic number, because the mean of its divisors is an integer number (45143483).

Almost surely, 2^306520052 is an apocalyptic number.

It is an amenable number.

306520052 is a deficient number, since it is larger than the sum of its proper divisors (235201744).

306520052 is a wasteful number, since it uses less digits than its factorization.

306520052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758818 (or 758816 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 306520052 is about 17507.7140712316. The cubic root of 306520052 is about 674.2479430132.

Adding to 306520052 its reverse (250025603), we get a palindrome (556545655).

The spelling of 306520052 in words is "three hundred six million, five hundred twenty thousand, fifty-two".