72050130 has 24 divisors (see below), whose sum is σ = 187330572. Its totient is φ = 19213344.

The previous prime is 72050129. The next prime is 72050159. The reversal of 72050130 is 3105027.

It can be written as a sum of positive squares in 2 ways, for example, as 68906601 + 3143529 = 8301^2 + 1773^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 400189 + ... + 400368.

Almost surely, 2^72050130 is an apocalyptic number.

72050130 is an abundant number, since it is smaller than the sum of its proper divisors (115280442).

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

72050130 is a wasteful number, since it uses less digits than its factorization.

72050130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800570 (or 800567 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 72050130 is about 8488.2347988260. The cubic root of 72050130 is about 416.1132927687.

Adding to 72050130 its reverse (3105027), we get a palindrome (75155157).

The spelling of 72050130 in words is "seventy-two million, fifty thousand, one hundred thirty".