72643052 has 6 divisors (see below), whose sum is σ = 127125348. Its totient is φ = 36321524.

The previous prime is 72643003. The next prime is 72643073. The reversal of 72643052 is 25034627.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9080378 + ... + 9080385.

It is an arithmetic number, because the mean of its divisors is an integer number (21187558).

Almost surely, 2^72643052 is an apocalyptic number.

It is an amenable number.

72643052 is a deficient number, since it is larger than the sum of its proper divisors (54482296).

72643052 is a wasteful number, since it uses less digits than its factorization.

72643052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18160767 (or 18160765 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 72643052 is about 8523.0893460059. The cubic root of 72643052 is about 417.2516160357.

Adding to 72643052 its reverse (25034627), we get a palindrome (97677679).

The spelling of 72643052 in words is "seventy-two million, six hundred forty-three thousand, fifty-two".