172004340 has 48 divisors (see below), whose sum is σ = 506963520. Its totient is φ = 43453440.

The previous prime is 172004311. The next prime is 172004341. The reversal of 172004340 is 43400271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172004341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74301 + ... + 76580.

It is an arithmetic number, because the mean of its divisors is an integer number (10561740).

Almost surely, 2^172004340 is an apocalyptic number.

172004340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172004340 is an abundant number, since it is smaller than the sum of its proper divisors (334959180).

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

172004340 is a wasteful number, since it uses less digits than its factorization.

172004340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150912 (or 150910 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 172004340 is about 13115.0425085091. The cubic root of 172004340 is about 556.1344541384.

The spelling of 172004340 in words is "one hundred seventy-two million, four thousand, three hundred forty".