172422712 has 64 divisors (see below), whose sum is σ = 412957440. Its totient is φ = 65529600.

The previous prime is 172422709. The next prime is 172422769. The reversal of 172422712 is 217224271.

172422712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172422712² = 59459183226869888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21843 + ... + 28669.

It is an arithmetic number, because the mean of its divisors is an integer number (6452460).

Almost surely, 2^172422712 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 172422712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206478720).

172422712 is an abundant number, since it is smaller than the sum of its proper divisors (240534728).

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

172422712 is a wasteful number, since it uses less digits than its factorization.

172422712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892 (or 6888 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 172422712 is about 13130.9829030427. The cubic root of 172422712 is about 556.5849906263.

Adding to 172422712 its reverse (217224271), we get a palindrome (389646983).

The spelling of 172422712 in words is "one hundred seventy-two million, four hundred twenty-two thousand, seven hundred twelve".