72455130 has 96 divisors (see below), whose sum is σ = 207230400. Its totient is φ = 17418240.

The previous prime is 72455111. The next prime is 72455147. The reversal of 72455130 is 3155427.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72455094 and 72455103.

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 in 47 ways as a sum of consecutive naturals, for example, 161146 + ... + 161594.

It is an arithmetic number, because the mean of its divisors is an integer number (2158650).

Almost surely, 2^72455130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72455130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103615200).

72455130 is an abundant number, since it is smaller than the sum of its proper divisors (134775270).

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

72455130 is a wasteful number, since it uses less digits than its factorization.

72455130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 72455130 is about 8512.0579180360. The cubic root of 72455130 is about 416.8915060294.

The spelling of 72455130 in words is "seventy-two million, four hundred fifty-five thousand, one hundred thirty".