72517230 has 48 divisors (see below), whose sum is σ = 189034560. Its totient is φ = 19287744.

The previous prime is 72517219. The next prime is 72517231. The reversal of 72517230 is 3271527.

It is a junction number, because it is equal to n+sod(n) for n = 72517194 and 72517203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72517231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45019 + ... + 46601.

It is an arithmetic number, because the mean of its divisors is an integer number (3938220).

Almost surely, 2^72517230 is an apocalyptic number.

72517230 is an abundant number, since it is smaller than the sum of its proper divisors (116517330).

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

72517230 is a wasteful number, since it uses less digits than its factorization.

72517230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105 (or 2102 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 72517230 is about 8515.7049032949. The cubic root of 72517230 is about 417.0105754439.

Adding to 72517230 its reverse (3271527), we get a palindrome (75788757).

It can be divided in two parts, 725 and 17230, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 72517230 in words is "seventy-two million, five hundred seventeen thousand, two hundred thirty".