172642204 has 24 divisors (see below), whose sum is σ = 345822848. Its totient is φ = 73874160.

The previous prime is 172642181. The next prime is 172642219. The reversal of 172642204 is 402246271.

It is a happy number.

172642204 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 (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14887 + ... + 23809.

Almost surely, 2^172642204 is an apocalyptic number.

172642204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

172642204 is an abundant number, since it is smaller than the sum of its proper divisors (173180644).

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

172642204 is a wasteful number, since it uses less digits than its factorization.

172642204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625 (or 9623 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 172642204 is about 13139.3380350762. The cubic root of 172642204 is about 556.8210657725.

Adding to 172642204 its reverse (402246271), we get a palindrome (574888475).

The spelling of 172642204 in words is "one hundred seventy-two million, six hundred forty-two thousand, two hundred four".