72727270 has 96 divisors (see below), whose sum is σ = 169019136. Its totient is φ = 22276800.

The previous prime is 72727247. The next prime is 72727301. The reversal of 72727270 is 7272727.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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, 555105 + ... + 555235.

It is an arithmetic number, because the mean of its divisors is an integer number (1760616).

Almost surely, 2^72727270 is an apocalyptic number.

72727270 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72727270 is an abundant number, since it is smaller than the sum of its proper divisors (96291866).

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

72727270 is a wasteful number, since it uses less digits than its factorization.

72727270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 19208, while the sum is 34.

The square root of 72727270 is about 8528.0284943239. The cubic root of 72727270 is about 417.4127992670.

Adding to 72727270 its reverse (7272727), we get a palindrome (79999997).

The spelling of 72727270 in words is "seventy-two million, seven hundred twenty-seven thousand, two hundred seventy".