172368400 has 30 divisors (see below), whose sum is σ = 414116042. Its totient is φ = 68947200.

The previous prime is 172368379. The next prime is 172368407. The reversal of 172368400 is 4863271.

It can be written as a sum of positive squares in 3 ways, for example, as 12194064 + 160174336 = 3492^2 + 12656^2 .

It is not an unprimeable number, because it can be changed into a prime (172368407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215061 + ... + 215860.

Almost surely, 2^172368400 is an apocalyptic number.

172368400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172368400 is an abundant number, since it is smaller than the sum of its proper divisors (241747642).

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

172368400 is a wasteful number, since it uses less digits than its factorization.

172368400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430939 (or 430928 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 172368400 is about 13128.9146543041. The cubic root of 172368400 is about 556.5265443072.

The spelling of 172368400 in words is "one hundred seventy-two million, three hundred sixty-eight thousand, four hundred".