172212960 has 192 divisors, whose sum is σ = 596574720. Its totient is φ = 41564160.

The previous prime is 172212959. The next prime is 172212961. The reversal of 172212960 is 69212271.

It is an interprime number because it is at equal distance from previous prime (172212959) and next prime (172212961).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172212961) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 209350 + ... + 210170.

It is an arithmetic number, because the mean of its divisors is an integer number (3107160).

Almost surely, 2^172212960 is an apocalyptic number.

172212960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172212960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298287360).

172212960 is an abundant number, since it is smaller than the sum of its proper divisors (424361760).

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

172212960 is a wasteful number, since it uses less digits than its factorization.

172212960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 172212960 is about 13122.9935609220. The cubic root of 172212960 is about 556.3592040781.

The spelling of 172212960 in words is "one hundred seventy-two million, two hundred twelve thousand, nine hundred sixty".