305900490 has 64 divisors (see below), whose sum is σ = 842837760. Its totient is φ = 69603840.

The previous prime is 305900479. The next prime is 305900509. The reversal of 305900490 is 94009503.

305900490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44910 + ... + 51270.

It is an arithmetic number, because the mean of its divisors is an integer number (13169340).

Almost surely, 2^305900490 is an apocalyptic number.

305900490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 305900490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421418880).

305900490 is an abundant number, since it is smaller than the sum of its proper divisors (536937270).

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

305900490 is a wasteful number, since it uses less digits than its factorization.

305900490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6607.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 305900490 is about 17490.0111492246. The cubic root of 305900490 is about 673.7933559230.

Adding to 305900490 its reverse (94009503), we get a palindrome (399909993).

The spelling of 305900490 in words is "three hundred five million, nine hundred thousand, four hundred ninety".