306465140 has 12 divisors (see below), whose sum is σ = 643576836. Its totient is φ = 122586048.

The previous prime is 306465113. The next prime is 306465143. The reversal of 306465140 is 41564603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121396324 + 185068816 = 11018^2 + 13604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306465143) 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, 7661609 + ... + 7661648.

It is an arithmetic number, because the mean of its divisors is an integer number (53631403).

Almost surely, 2^306465140 is an apocalyptic number.

It is an amenable number.

306465140 is an abundant number, since it is smaller than the sum of its proper divisors (337111696).

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

306465140 is a wasteful number, since it uses less digits than its factorization.

306465140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15323266 (or 15323264 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 306465140 is about 17506.1457779832. The cubic root of 306465140 is about 674.2076775516.

The spelling of 306465140 in words is "three hundred six million, four hundred sixty-five thousand, one hundred forty".