172080426 has 48 divisors (see below), whose sum is σ = 417854016. Its totient is φ = 46270464.

The previous prime is 172080373. The next prime is 172080431. The reversal of 172080426 is 624080271.

It is a super-2 number, since 2×172080426² = 59223346024682952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172080393 and 172080402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5050 + ... + 19226.

It is an arithmetic number, because the mean of its divisors is an integer number (8705292).

Almost surely, 2^172080426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172080426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208927008).

172080426 is an abundant number, since it is smaller than the sum of its proper divisors (245773590).

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

172080426 is a wasteful number, since it uses less digits than its factorization.

172080426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14223 (or 14206 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 172080426 is about 13117.9429027573. The cubic root of 172080426 is about 556.2164439464.

The spelling of 172080426 in words is "one hundred seventy-two million, eighty thousand, four hundred twenty-six".