306272540 has 72 divisors (see below), whose sum is σ = 761004720. Its totient is φ = 103208448.

The previous prime is 306272513. The next prime is 306272557. The reversal of 306272540 is 45272603.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 55172 + ... + 60468.

It is an arithmetic number, because the mean of its divisors is an integer number (10569510).

Almost surely, 2^306272540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306272540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380502360).

306272540 is an abundant number, since it is smaller than the sum of its proper divisors (454732180).

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

306272540 is a wasteful number, since it uses less digits than its factorization.

306272540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5379 (or 5370 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 306272540 is about 17500.6439881508. The cubic root of 306272540 is about 674.0664112285.

The spelling of 306272540 in words is "three hundred six million, two hundred seventy-two thousand, five hundred forty".