72454570 has 16 divisors (see below), whose sum is σ = 133452000. Its totient is φ = 28307664.

The previous prime is 72454559. The next prime is 72454579. The reversal of 72454570 is 7545427.

It is not an unprimeable number, because it can be changed into a prime (72454579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83820 + ... + 84679.

It is an arithmetic number, because the mean of its divisors is an integer number (8340750).

Almost surely, 2^72454570 is an apocalyptic number.

72454570 is a deficient number, since it is larger than the sum of its proper divisors (60997430).

72454570 is a wasteful number, since it uses less digits than its factorization.

72454570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168549.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 72454570 is about 8512.0250234595. The cubic root of 72454570 is about 416.8904319861.

Adding to 72454570 its reverse (7545427), we get a palindrome (79999997).

The spelling of 72454570 in words is "seventy-two million, four hundred fifty-four thousand, five hundred seventy".