303240655840 has 96 divisors (see below), whose sum is σ = 742776459264. Its totient is φ = 116865937920.

The previous prime is 303240655813. The next prime is 303240655891. The reversal of 303240655840 is 48556042303.

It is a super-2 number, since 2×303240655840² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 303240655793 and 303240655802.

It is a congruent number.

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, 991257 + ... + 1260583.

It is an arithmetic number, because the mean of its divisors is an integer number (7737254784).

Almost surely, 2^303240655840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303240655840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371388229632).

303240655840 is an abundant number, since it is smaller than the sum of its proper divisors (439535803424).

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

303240655840 is a wasteful number, since it uses less digits than its factorization.

303240655840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269600 (or 269592 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 303240655840 in words is "three hundred three billion, two hundred forty million, six hundred fifty-five thousand, eight hundred forty".