303984990 has 96 divisors (see below), whose sum is σ = 880981920. Its totient is φ = 72271872.

The previous prime is 303984979. The next prime is 303985027. The reversal of 303984990 is 99489303.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23842 + ... + 34298.

It is an arithmetic number, because the mean of its divisors is an integer number (9176895).

Almost surely, 2^303984990 is an apocalyptic number.

303984990 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 303984990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440490960).

303984990 is an abundant number, since it is smaller than the sum of its proper divisors (576996930).

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

303984990 is a wasteful number, since it uses less digits than its factorization.

303984990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506 (or 10503 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 303984990 is about 17435.1653275786. The cubic root of 303984990 is about 672.3840146753.

The spelling of 303984990 in words is "three hundred three million, nine hundred eighty-four thousand, nine hundred ninety".