172822716 has 144 divisors (see below), whose sum is σ = 501228000. Its totient is φ = 49728000.

The previous prime is 172822711. The next prime is 172822729. The reversal of 172822716 is 617228271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172822711) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1159810 + ... + 1159958.

It is an arithmetic number, because the mean of its divisors is an integer number (3480750).

Almost surely, 2^172822716 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 172822716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250614000).

172822716 is an abundant number, since it is smaller than the sum of its proper divisors (328405284).

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

172822716 is a wasteful number, since it uses less digits than its factorization.

172822716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 295 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 172822716 is about 13146.2053840643. The cubic root of 172822716 is about 557.0150659854.

The spelling of 172822716 in words is "one hundred seventy-two million, eight hundred twenty-two thousand, seven hundred sixteen".