172224016 has 20 divisors (see below), whose sum is σ = 333947500. Its totient is φ = 86044032.

The previous prime is 172224001. The next prime is 172224053. The reversal of 172224016 is 610422271.

It can be written as a sum of positive squares in 2 ways, for example, as 108160000 + 64064016 = 10400^2 + 8004^2 .

It is a super-2 number, since 2×172224016² = 59322223374336512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21310 + ... + 28258.

It is an arithmetic number, because the mean of its divisors is an integer number (16697375).

Almost surely, 2^172224016 is an apocalyptic number.

172224016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172224016 is a deficient number, since it is larger than the sum of its proper divisors (161723484).

172224016 is a wasteful number, since it uses less digits than its factorization.

172224016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8506 (or 8500 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 172224016 is about 13123.4147995101. The cubic root of 172224016 is about 556.3711098327.

Adding to 172224016 its reverse (610422271), we get a palindrome (782646287).

The spelling of 172224016 in words is "one hundred seventy-two million, two hundred twenty-four thousand, sixteen".