72727782 has 24 divisors (see below), whose sum is σ = 153518616. Its totient is φ = 22965984.

The previous prime is 72727747. The next prime is 72727789. The reversal of 72727782 is 28772727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72727789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14623 + ... + 18954.

It is an arithmetic number, because the mean of its divisors is an integer number (6396609).

Almost surely, 2^72727782 is an apocalyptic number.

72727782 is an abundant number, since it is smaller than the sum of its proper divisors (80790834).

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

72727782 is a wasteful number, since it uses less digits than its factorization.

72727782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33620 (or 33601 counting only the distinct ones).

The product of its digits is 153664, while the sum is 42.

The square root of 72727782 is about 8528.0585129325. The cubic root of 72727782 is about 417.4137787934.

The spelling of 72727782 in words is "seventy-two million, seven hundred twenty-seven thousand, seven hundred eighty-two".