305677428 has 24 divisors (see below), whose sum is σ = 815140032. Its totient is φ = 87336384.

The previous prime is 305677423. The next prime is 305677433. The reversal of 305677428 is 824776503.

It is an interprime number because it is at equal distance from previous prime (305677423) and next prime (305677433).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 305677428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305677423) 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 7 ways as a sum of consecutive naturals, for example, 1819425 + ... + 1819592.

It is an arithmetic number, because the mean of its divisors is an integer number (33964168).

Almost surely, 2^305677428 is an apocalyptic number.

It is an amenable number.

305677428 is an abundant number, since it is smaller than the sum of its proper divisors (509462604).

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

305677428 is a wasteful number, since it uses less digits than its factorization.

305677428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639031 (or 3639029 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 305677428 is about 17483.6331464601. The cubic root of 305677428 is about 673.6295398613.

The spelling of 305677428 in words is "three hundred five million, six hundred seventy-seven thousand, four hundred twenty-eight".