305053890 has 32 divisors (see below), whose sum is σ = 736525440. Its totient is φ = 80859264.

The previous prime is 305053867. The next prime is 305053901. The reversal of 305053890 is 98350503.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25435 + ... + 35454.

It is an arithmetic number, because the mean of its divisors is an integer number (23016420).

Almost surely, 2^305053890 is an apocalyptic number.

305053890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305053890 is an abundant number, since it is smaller than the sum of its proper divisors (431471550).

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

305053890 is a wasteful number, since it uses less digits than its factorization.

305053890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61066.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 305053890 is about 17465.7919946391. The cubic root of 305053890 is about 673.1711922653.

The spelling of 305053890 in words is "three hundred five million, fifty-three thousand, eight hundred ninety".