172400000 has 96 divisors (see below), whose sum is σ = 430284960. Its totient is φ = 68800000.

The previous prime is 172399993. The next prime is 172400017. The reversal of 172400000 is 4271.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 399785 + ... + 400215.

It is an arithmetic number, because the mean of its divisors is an integer number (4482135).

Almost surely, 2^172400000 is an apocalyptic number.

172400000 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 172400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215142480).

172400000 is an abundant number, since it is smaller than the sum of its proper divisors (257884960).

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

172400000 is an frugal number, since it uses more digits than its factorization.

172400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 172400000 is about 13130.1180497359. The cubic root of 172400000 is about 556.5605512447.

Adding to 172400000 its reverse (4271), we get a palindrome (172404271).

The spelling of 172400000 in words is "one hundred seventy-two million, four hundred thousand".