73272052 has 18 divisors (see below), whose sum is σ = 149161362. Its totient is φ = 31402224.

The previous prime is 73272047. The next prime is 73272053. The reversal of 73272052 is 25027237.

It can be written as a sum of positive squares in only one way, i.e., 46294416 + 26977636 = 6804^2 + 5194^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 73272052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73272053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186723 + ... + 187114.

Almost surely, 2^73272052 is an apocalyptic number.

It is an amenable number.

73272052 is an abundant number, since it is smaller than the sum of its proper divisors (75889310).

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

73272052 is a wasteful number, since it uses less digits than its factorization.

73272052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373855 (or 373846 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 73272052 is about 8559.9095789617. The cubic root of 73272052 is about 418.4524530047.

Adding to 73272052 its reverse (25027237), we get a palindrome (98299289).

The spelling of 73272052 in words is "seventy-three million, two hundred seventy-two thousand, fifty-two".