303020442240 has 128 divisors (see below), whose sum is σ = 970456576320. Its totient is φ = 80422379520.

The previous prime is 303020442233. The next prime is 303020442253. The reversal of 303020442240 is 42244020303.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 303020442240.

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, 31132 + ... + 779108.

Almost surely, 2^303020442240 is an apocalyptic number.

303020442240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303020442240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485228288160).

303020442240 is an abundant number, since it is smaller than the sum of its proper divisors (667436134080).

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

303020442240 is a wasteful number, since it uses less digits than its factorization.

303020442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748210 (or 748198 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 303020442240 its reverse (42244020303), we get a palindrome (345264462543).

The spelling of 303020442240 in words is "three hundred three billion, twenty million, four hundred forty-two thousand, two hundred forty".