305143404 has 48 divisors (see below), whose sum is σ = 755733888. Its totient is φ = 95496448.

The previous prime is 305143381. The next prime is 305143417. The reversal of 305143404 is 404341503.

It is a super-2 number, since 2×305143404² = 186224994009414432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93667 + ... + 96869.

It is an arithmetic number, because the mean of its divisors is an integer number (15744456).

Almost surely, 2^305143404 is an apocalyptic number.

305143404 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305143404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377866944).

305143404 is an abundant number, since it is smaller than the sum of its proper divisors (450590484).

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

305143404 is a wasteful number, since it uses less digits than its factorization.

305143404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694 (or 3692 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 305143404 is about 17468.3543586681. The cubic root of 305143404 is about 673.2370301987.

Adding to 305143404 its reverse (404341503), we get a palindrome (709484907).

The spelling of 305143404 in words is "three hundred five million, one hundred forty-three thousand, four hundred four".