72063172 has 24 divisors (see below), whose sum is σ = 127685376. Its totient is φ = 35585088.

The previous prime is 72063169. The next prime is 72063179. The reversal of 72063172 is 27136027.

It is a super-3 number, since 3×72063172³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72063172.

It is not an unprimeable number, because it can be changed into a prime (72063179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155413 + ... + 155875.

It is an arithmetic number, because the mean of its divisors is an integer number (5320224).

Almost surely, 2^72063172 is an apocalyptic number.

It is an amenable number.

72063172 is a deficient number, since it is larger than the sum of its proper divisors (55622204).

72063172 is a wasteful number, since it uses less digits than its factorization.

72063172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 72063172 is about 8489.0030038869. The cubic root of 72063172 is about 416.1383985395.

Adding to 72063172 its reverse (27136027), we get a palindrome (99199199).

The spelling of 72063172 in words is "seventy-two million, sixty-three thousand, one hundred seventy-two".