172426338 has 24 divisors (see below), whose sum is σ = 426960768. Its totient is φ = 49264632.

The previous prime is 172426313. The next prime is 172426339. The reversal of 172426338 is 833624271.

It is a happy number.

172426338 is a `hidden beast` number, since 17 + 2 + 4 + 2 + 633 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (172426339) 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, 684106 + ... + 684357.

It is an arithmetic number, because the mean of its divisors is an integer number (17790032).

Almost surely, 2^172426338 is an apocalyptic number.

172426338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

172426338 is an abundant number, since it is smaller than the sum of its proper divisors (254534430).

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

172426338 is a wasteful number, since it uses less digits than its factorization.

172426338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368478 (or 1368475 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 172426338 is about 13131.1209727121. The cubic root of 172426338 is about 556.5888922064.

The spelling of 172426338 in words is "one hundred seventy-two million, four hundred twenty-six thousand, three hundred thirty-eight".