172835440 has 20 divisors (see below), whose sum is σ = 401842584. Its totient is φ = 69134144.

The previous prime is 172835407. The next prime is 172835441. The reversal of 172835440 is 44538271.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 172835396 and 172835405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172835441) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1080142 + ... + 1080301.

Almost surely, 2^172835440 is an apocalyptic number.

172835440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172835440 is an abundant number, since it is smaller than the sum of its proper divisors (229007144).

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

172835440 is a wasteful number, since it uses less digits than its factorization.

172835440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160456 (or 2160450 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 172835440 is about 13146.6893170866. The cubic root of 172835440 is about 557.0287356501.

The spelling of 172835440 in words is "one hundred seventy-two million, eight hundred thirty-five thousand, four hundred forty".