305009148 has 48 divisors (see below), whose sum is σ = 734823936. Its totient is φ = 98407680.

The previous prime is 305009143. The next prime is 305009149. The reversal of 305009148 is 841900503.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305009143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55693 + ... + 60923.

It is an arithmetic number, because the mean of its divisors is an integer number (15308832).

Almost surely, 2^305009148 is an apocalyptic number.

It is an amenable number.

305009148 is an abundant number, since it is smaller than the sum of its proper divisors (429814788).

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

305009148 is a wasteful number, since it uses less digits than its factorization.

305009148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394 (or 5392 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 305009148 is about 17464.5111010873. The cubic root of 305009148 is about 673.1382795034.

The spelling of 305009148 in words is "three hundred five million, nine thousand, one hundred forty-eight".