172726340 has 24 divisors (see below), whose sum is σ = 381816960. Its totient is φ = 65454048.

The previous prime is 172726331. The next prime is 172726361. The reversal of 172726340 is 43627271.

It is a junction number, because it is equal to n+sod(n) for n = 172726297 and 172726306.

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, 226892 + ... + 227651.

It is an arithmetic number, because the mean of its divisors is an integer number (15909040).

Almost surely, 2^172726340 is an apocalyptic number.

172726340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172726340 is an abundant number, since it is smaller than the sum of its proper divisors (209090620).

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

172726340 is a wasteful number, since it uses less digits than its factorization.

172726340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454571 (or 454569 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 172726340 is about 13142.5393284555. The cubic root of 172726340 is about 556.9115053979.

The spelling of 172726340 in words is "one hundred seventy-two million, seven hundred twenty-six thousand, three hundred forty".