172190240 has 48 divisors (see below), whose sum is σ = 408298968. Its totient is φ = 68622336.

The previous prime is 172190237. The next prime is 172190309. The reversal of 172190240 is 42091271.

It can be written as a sum of positive squares in 4 ways, for example, as 139334416 + 32855824 = 11804^2 + 5732^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45044 + ... + 48716.

Almost surely, 2^172190240 is an apocalyptic number.

172190240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172190240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204149484).

172190240 is an abundant number, since it is smaller than the sum of its proper divisors (236108728).

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

172190240 is a wasteful number, since it uses less digits than its factorization.

172190240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981 (or 3973 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 172190240 is about 13122.1278762250. The cubic root of 172190240 is about 556.3347362389.

The spelling of 172190240 in words is "one hundred seventy-two million, one hundred ninety thousand, two hundred forty".