172622404 has 12 divisors (see below), whose sum is σ = 305729424. Its totient is φ = 85271144.

The previous prime is 172622381. The next prime is 172622441. The reversal of 172622404 is 404226271.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259642 + ... + 260305.

It is an arithmetic number, because the mean of its divisors is an integer number (25477452).

Almost surely, 2^172622404 is an apocalyptic number.

It is an amenable number.

172622404 is a deficient number, since it is larger than the sum of its proper divisors (133107020).

172622404 is a wasteful number, since it uses less digits than its factorization.

172622404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520034 (or 520032 counting only the distinct ones).

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

The square root of 172622404 is about 13138.5845508563. The cubic root of 172622404 is about 556.7997780488.

Adding to 172622404 its reverse (404226271), we get a palindrome (576848675).

The spelling of 172622404 in words is "one hundred seventy-two million, six hundred twenty-two thousand, four hundred four".