172003400 has 48 divisors (see below), whose sum is σ = 400802100. Its totient is φ = 68647680.

The previous prime is 172003373. The next prime is 172003411. The reversal of 172003400 is 4300271.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3678724 + 168324676 = 1918^2 + 12974^2 .

It is a super-2 number, since 2×172003400² = 59170339223120000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141194 + ... + 142406.

Almost surely, 2^172003400 is an apocalyptic number.

172003400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172003400 is an abundant number, since it is smaller than the sum of its proper divisors (228798700).

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

172003400 is a wasteful number, since it uses less digits than its factorization.

172003400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 172003400 is about 13115.0066717482. The cubic root of 172003400 is about 556.1334410490.

Adding to 172003400 its reverse (4300271), we get a palindrome (176303671).

The spelling of 172003400 in words is "one hundred seventy-two million, three thousand, four hundred".