72727398 has 12 divisors (see below), whose sum is σ = 157576068. Its totient is φ = 24242460.

The previous prime is 72727397. The next prime is 72727451. The reversal of 72727398 is 89372727.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72727393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2020188 + ... + 2020223.

It is an arithmetic number, because the mean of its divisors is an integer number (13131339).

Almost surely, 2^72727398 is an apocalyptic number.

72727398 is an abundant number, since it is smaller than the sum of its proper divisors (84848670).

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

72727398 is a wasteful number, since it uses less digits than its factorization.

72727398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040419 (or 4040416 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 72727398 is about 8528.0359989859. The cubic root of 72727398 is about 417.4130441490.

The spelling of 72727398 in words is "seventy-two million, seven hundred twenty-seven thousand, three hundred ninety-eight".