72272742 has 8 divisors (see below), whose sum is σ = 144545496. Its totient is φ = 24090912.

The previous prime is 72272741. The next prime is 72272771. The reversal of 72272742 is 24727227.

It is a sphenic number, since it is the product of 3 distinct primes.

72272742 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72272741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6022723 + ... + 6022734.

It is an arithmetic number, because the mean of its divisors is an integer number (18068187).

Almost surely, 2^72272742 is an apocalyptic number.

72272742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72272742 is a wasteful number, since it uses less digits than its factorization.

72272742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12045462.

The product of its digits is 21952, while the sum is 33.

The square root of 72272742 is about 8501.3376594510. The cubic root of 72272742 is about 416.5414047642.

Adding to 72272742 its reverse (24727227), we get a palindrome (96999969).

The spelling of 72272742 in words is "seventy-two million, two hundred seventy-two thousand, seven hundred forty-two".