303980490 has 144 divisors (see below), whose sum is σ = 887271840. Its totient is φ = 71605440.

The previous prime is 303980477. The next prime is 303980497. The reversal of 303980490 is 94089303.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (303980497) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2186841 + ... + 2186979.

It is an arithmetic number, because the mean of its divisors is an integer number (6161610).

Almost surely, 2^303980490 is an apocalyptic number.

303980490 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 303980490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443635920).

303980490 is an abundant number, since it is smaller than the sum of its proper divisors (583291350).

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

303980490 is a wasteful number, since it uses less digits than its factorization.

303980490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 303980490 is about 17435.0362775648. The cubic root of 303980490 is about 672.3806968108.

The spelling of 303980490 in words is "three hundred three million, nine hundred eighty thousand, four hundred ninety".