172239376 has 45 divisors (see below), whose sum is σ = 356345031. Its totient is φ = 80633856.

The previous prime is 172239371. The next prime is 172239383. The reversal of 172239376 is 673932271.

The square root of 172239376 is 13124.

It is a perfect power (a square), and thus also a powerful number.

172239376 is nontrivially palindromic in base 3 and base 9.

It can be written as a sum of positive squares in 4 ways, for example, as 104976 + 172134400 = 324^2 + 13120^2 .

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (172239371) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 892336 + ... + 892528.

Almost surely, 2^172239376 is an apocalyptic number.

172239376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

172239376 is the 13124-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172239376

172239376 is an abundant number, since it is smaller than the sum of its proper divisors (184105655).

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

172239376 is an equidigital number, since it uses as much as digits as its factorization.

172239376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 212 counting only the distinct ones).

The product of its digits is 95256, while the sum is 40.

The cubic root of 172239376 is about 556.3876495434.

The spelling of 172239376 in words is "one hundred seventy-two million, two hundred thirty-nine thousand, three hundred seventy-six".