172623216 has 40 divisors (see below), whose sum is σ = 451598080. Its totient is φ = 56811456.

The previous prime is 172623197. The next prime is 172623233. The reversal of 172623216 is 612326271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18970 + ... + 26553.

It is an arithmetic number, because the mean of its divisors is an integer number (11289952).

Almost surely, 2^172623216 is an apocalyptic number.

172623216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172623216 is an abundant number, since it is smaller than the sum of its proper divisors (278974864).

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

172623216 is a wasteful number, since it uses less digits than its factorization.

172623216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45613 (or 45607 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 172623216 is about 13138.6154521700. The cubic root of 172623216 is about 556.8006510925.

Adding to 172623216 its reverse (612326271), we get a palindrome (784949487).

It can be divided in two parts, 1726 and 23216, that added together give a palindrome (24942).

The spelling of 172623216 in words is "one hundred seventy-two million, six hundred twenty-three thousand, two hundred sixteen".