172257040 has 40 divisors (see below), whose sum is σ = 421580160. Its totient is φ = 65275776.

The previous prime is 172257023. The next prime is 172257061. The reversal of 172257040 is 40752271.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×172257040³ (a number of 26 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 55144 + ... + 58183.

It is an arithmetic number, because the mean of its divisors is an integer number (10539504).

Almost surely, 2^172257040 is an apocalyptic number.

172257040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172257040 is an abundant number, since it is smaller than the sum of its proper divisors (249323120).

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

172257040 is a wasteful number, since it uses less digits than its factorization.

172257040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113359 (or 113353 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 172257040 is about 13124.6729483062. The cubic root of 172257040 is about 556.4066689951.

The spelling of 172257040 in words is "one hundred seventy-two million, two hundred fifty-seven thousand, forty".