305442434 has 16 divisors (see below), whose sum is σ = 529216416. Its totient is φ = 130670400.

The previous prime is 305442421. The next prime is 305442463. The reversal of 305442434 is 434244503.

It is a junction number, because it is equal to n+sod(n) for n = 305442397 and 305442406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407972 + ... + 408719.

It is an arithmetic number, because the mean of its divisors is an integer number (33076026).

Almost surely, 2^305442434 is an apocalyptic number.

305442434 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

305442434 is a deficient number, since it is larger than the sum of its proper divisors (223773982).

305442434 is a wasteful number, since it uses less digits than its factorization.

305442434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816721.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 305442434 is about 17476.9114548309. The cubic root of 305442434 is about 673.4568747490.

Adding to 305442434 its reverse (434244503), we get a palindrome (739686937).

The spelling of 305442434 in words is "three hundred five million, four hundred forty-two thousand, four hundred thirty-four".