172111240 has 32 divisors (see below), whose sum is σ = 442572480. Its totient is φ = 59009472.

The previous prime is 172111189. The next prime is 172111243. The reversal of 172111240 is 42111271.

It is not an unprimeable number, because it can be changed into a prime (172111243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307062 + ... + 307621.

It is an arithmetic number, because the mean of its divisors is an integer number (13830390).

Almost surely, 2^172111240 is an apocalyptic number.

172111240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172111240 is an abundant number, since it is smaller than the sum of its proper divisors (270461240).

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

172111240 is a wasteful number, since it uses less digits than its factorization.

172111240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614701 (or 614697 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 172111240 is about 13119.1173483585. The cubic root of 172111240 is about 556.2496420483.

The spelling of 172111240 in words is "one hundred seventy-two million, one hundred eleven thousand, two hundred forty".