727018340 has 24 divisors (see below), whose sum is σ = 1549528512. Its totient is φ = 286466400.

The previous prime is 727018321. The next prime is 727018343. The reversal of 727018340 is 43810727.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 727018297 and 727018306.

It is not an unprimeable number, because it can be changed into a prime (727018343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269936 + ... + 272615.

It is an arithmetic number, because the mean of its divisors is an integer number (64563688).

Almost surely, 2^727018340 is an apocalyptic number.

It is an amenable number.

727018340 is an abundant number, since it is smaller than the sum of its proper divisors (822510172).

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

727018340 is a wasteful number, since it uses less digits than its factorization.

727018340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542627 (or 542625 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 727018340 is about 26963.2776197554. The cubic root of 727018340 is about 899.1837620098.

The spelling of 727018340 in words is "seven hundred twenty-seven million, eighteen thousand, three hundred forty".