172113400 has 48 divisors (see below), whose sum is σ = 421234200. Its totient is φ = 65220480.

The previous prime is 172113397. The next prime is 172113401. The reversal of 172113400 is 4311271.

172113400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172113401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18847 + ... + 26446.

Almost surely, 2^172113400 is an apocalyptic number.

172113400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172113400 is an abundant number, since it is smaller than the sum of its proper divisors (249120800).

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

172113400 is a wasteful number, since it uses less digits than its factorization.

172113400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45328 (or 45319 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 172113400 is about 13119.1996707116. The cubic root of 172113400 is about 556.2519690205.

Adding to 172113400 its reverse (4311271), we get a palindrome (176424671).

The spelling of 172113400 in words is "one hundred seventy-two million, one hundred thirteen thousand, four hundred".