7273218240 has 336 divisors, whose sum is σ = 27483206400. Its totient is φ = 1757251584.

The previous prime is 7273218223. The next prime is 7273218269. The reversal of 7273218240 is 428123727.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7273218195 and 7273218204.

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, 1255671 + ... + 1261449.

Almost surely, 2^7273218240 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 7273218240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13741603200).

7273218240 is an abundant number, since it is smaller than the sum of its proper divisors (20209988160).

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

7273218240 is a wasteful number, since it uses less digits than its factorization.

7273218240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844 (or 5831 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 7273218240 is about 85283.1650444565. The cubic root of 7273218240 is about 1937.5022093072.

The spelling of 7273218240 in words is "seven billion, two hundred seventy-three million, two hundred eighteen thousand, two hundred forty".