172897416 has 192 divisors, whose sum is σ = 531148800. Its totient is φ = 52488000.

The previous prime is 172897393. The next prime is 172897421. The reversal of 172897416 is 614798271.

It is a happy number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1144941 + ... + 1145091.

It is an arithmetic number, because the mean of its divisors is an integer number (2766400).

Almost surely, 2^172897416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172897416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265574400).

172897416 is an abundant number, since it is smaller than the sum of its proper divisors (358251384).

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

172897416 is a wasteful number, since it uses less digits than its factorization.

172897416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 206 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 172897416 is about 13149.0462011509. The cubic root of 172897416 is about 557.0953081991.

The spelling of 172897416 in words is "one hundred seventy-two million, eight hundred ninety-seven thousand, four hundred sixteen".