172089546 has 32 divisors (see below), whose sum is σ = 354267648. Its totient is φ = 55695360.

The previous prime is 172089539. The next prime is 172089581. The reversal of 172089546 is 645980271.

It is a super-2 number, since 2×172089546² = 59229623684972232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172089498 and 172089507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53290 + ... + 56426.

It is an arithmetic number, because the mean of its divisors is an integer number (11070864).

Almost surely, 2^172089546 is an apocalyptic number.

172089546 is an abundant number, since it is smaller than the sum of its proper divisors (182178102).

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

172089546 is a wasteful number, since it uses less digits than its factorization.

172089546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 172089546 is about 13118.2905136302. The cubic root of 172089546 is about 556.2262699804.

The spelling of 172089546 in words is "one hundred seventy-two million, eighty-nine thousand, five hundred forty-six".