306140148 has 144 divisors (see below), whose sum is σ = 862977024. Its totient is φ = 94556160.

The previous prime is 306140147. The next prime is 306140201. The reversal of 306140148 is 841041603.

306140148 is a `hidden beast` number, since 3 + 0 + 614 + 0 + 1 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306140147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1602733 + ... + 1602923.

It is an arithmetic number, because the mean of its divisors is an integer number (5992896).

Almost surely, 2^306140148 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 306140148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431488512).

306140148 is an abundant number, since it is smaller than the sum of its proper divisors (556836876).

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

306140148 is a wasteful number, since it uses less digits than its factorization.

306140148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 306140148 is about 17496.8610899212. The cubic root of 306140148 is about 673.9692713173.

The spelling of 306140148 in words is "three hundred six million, one hundred forty thousand, one hundred forty-eight".