72354472 has 8 divisors (see below), whose sum is σ = 135664650. Its totient is φ = 36177232.

The previous prime is 72354437. The next prime is 72354493. The reversal of 72354472 is 27445327.

It can be written as a sum of positive squares in only one way, i.e., 54257956 + 18096516 = 7366^2 + 4254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4522147 + ... + 4522162.

Almost surely, 2^72354472 is an apocalyptic number.

It is an amenable number.

72354472 is a deficient number, since it is larger than the sum of its proper divisors (63310178).

72354472 is a wasteful number, since it uses less digits than its factorization.

72354472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044315 (or 9044311 counting only the distinct ones).

The product of its digits is 47040, while the sum is 34.

The square root of 72354472 is about 8506.1431918349. The cubic root of 72354472 is about 416.6983616068.

Adding to 72354472 its reverse (27445327), we get a palindrome (99799799).

The spelling of 72354472 in words is "seventy-two million, three hundred fifty-four thousand, four hundred seventy-two".