305288030 has 32 divisors (see below), whose sum is σ = 562826880. Its totient is φ = 119173120.

The previous prime is 305288021. The next prime is 305288047. The reversal of 305288030 is 30882503.

It is a super-2 number, since 2×305288030² = 186401562522561800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305287984 and 305288002.

It is a congruent number.

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, 215966 + ... + 217374.

It is an arithmetic number, because the mean of its divisors is an integer number (17588340).

Almost surely, 2^305288030 is an apocalyptic number.

305288030 is a deficient number, since it is larger than the sum of its proper divisors (257538850).

305288030 is a wasteful number, since it uses less digits than its factorization.

305288030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 305288030 is about 17472.4935255389. The cubic root of 305288030 is about 673.3433760443.

The spelling of 305288030 in words is "three hundred five million, two hundred eighty-eight thousand, thirty".