4545040240 has 80 divisors (see below), whose sum is σ = 11657753856. Its totient is φ = 1637222400.

The previous prime is 4545040223. The next prime is 4545040249. The reversal of 4545040240 is 420405454.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4545040199 and 4545040208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545040249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10656 + ... + 95935.

Almost surely, 2^4545040240 is an apocalyptic number.

4545040240 is a gapful number since it is divisible by the number (40) 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 4545040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5828876928).

4545040240 is an abundant number, since it is smaller than the sum of its proper divisors (7112713616).

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

4545040240 is a wasteful number, since it uses less digits than its factorization.

4545040240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106658 (or 106652 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 4545040240 is about 67416.9136048218. The cubic root of 4545040240 is about 1656.4534822692.

Adding to 4545040240 its reverse (420405454), we get a palindrome (4965445694).

The spelling of 4545040240 in words is "four billion, five hundred forty-five million, forty thousand, two hundred forty".