72523230 has 32 divisors (see below), whose sum is σ = 187445664. Its totient is φ = 17851776.

The previous prime is 72523201. The next prime is 72523267. The reversal of 72523230 is 3232527.

It is a super-3 number, since 3×72523230³ (a number of 25 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72523230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92589 + ... + 93368.

It is an arithmetic number, because the mean of its divisors is an integer number (5857677).

Almost surely, 2^72523230 is an apocalyptic number.

72523230 is an abundant number, since it is smaller than the sum of its proper divisors (114922434).

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

72523230 is a wasteful number, since it uses less digits than its factorization.

72523230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185980.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 72523230 is about 8516.0571862805. The cubic root of 72523230 is about 417.0220761334.

Adding to 72523230 its reverse (3232527), we get a palindrome (75755757).

The spelling of 72523230 in words is "seventy-two million, five hundred twenty-three thousand, two hundred thirty".