172361436 has 96 divisors (see below), whose sum is σ = 463776768. Its totient is φ = 49351680.

The previous prime is 172361411. The next prime is 172361467. The reversal of 172361436 is 634163271.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 172361397 and 172361406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272841 + ... + 273471.

It is an arithmetic number, because the mean of its divisors is an integer number (4831008).

Almost surely, 2^172361436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172361436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231888384).

172361436 is an abundant number, since it is smaller than the sum of its proper divisors (291415332).

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

172361436 is a wasteful number, since it uses less digits than its factorization.

172361436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 769 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 172361436 is about 13128.6494354903. The cubic root of 172361436 is about 556.5190493080.

The spelling of 172361436 in words is "one hundred seventy-two million, three hundred sixty-one thousand, four hundred thirty-six".