173215040 has 84 divisors (see below), whose sum is σ = 438392316. Its totient is φ = 65175552.

The previous prime is 173215013. The next prime is 173215099. The reversal of 173215040 is 40512371.

It can be written as a sum of positive squares in 6 ways, for example, as 1290496 + 171924544 = 1136^2 + 13112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 173214997 and 173215015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91544 + ... + 93416.

Almost surely, 2^173215040 is an apocalyptic number.

173215040 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 173215040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219196158).

173215040 is an abundant number, since it is smaller than the sum of its proper divisors (265177276).

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

173215040 is a wasteful number, since it uses less digits than its factorization.

173215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 173215040 is about 13161.1184935020. The cubic root of 173215040 is about 557.4362398342.

The spelling of 173215040 in words is "one hundred seventy-three million, two hundred fifteen thousand, forty".