72243796 has 6 divisors (see below), whose sum is σ = 126426650. Its totient is φ = 36121896.

The previous prime is 72243791. The next prime is 72243817. The reversal of 72243796 is 69734227.

It can be written as a sum of positive squares in only one way, i.e., 42432196 + 29811600 = 6514^2 + 5460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72243791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9030471 + ... + 9030478.

Almost surely, 2^72243796 is an apocalyptic number.

It is an amenable number.

72243796 is a deficient number, since it is larger than the sum of its proper divisors (54182854).

72243796 is a wasteful number, since it uses less digits than its factorization.

72243796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18060953 (or 18060951 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 72243796 is about 8499.6350509890. The cubic root of 72243796 is about 416.4857875878.

The spelling of 72243796 in words is "seventy-two million, two hundred forty-three thousand, seven hundred ninety-six".