72453534 has 24 divisors (see below), whose sum is σ = 147447240. Its totient is φ = 23734992.

The previous prime is 72453533. The next prime is 72453569. The reversal of 72453534 is 43535427.

It is a junction number, because it is equal to n+sod(n) for n = 72453495 and 72453504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72453533) 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 11 ways as a sum of consecutive naturals, for example, 19152 + ... + 22620.

It is an arithmetic number, because the mean of its divisors is an integer number (6143635).

Almost surely, 2^72453534 is an apocalyptic number.

72453534 is an abundant number, since it is smaller than the sum of its proper divisors (74993706).

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

72453534 is a wasteful number, since it uses less digits than its factorization.

72453534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592 (or 3533 counting only the distinct ones).

The product of its digits is 50400, while the sum is 33.

The square root of 72453534 is about 8511.9641681577. The cubic root of 72453534 is about 416.8884449913. Note that the first 3 decimals are identical.

The spelling of 72453534 in words is "seventy-two million, four hundred fifty-three thousand, five hundred thirty-four".