172842280 has 64 divisors (see below), whose sum is σ = 425754000. Its totient is φ = 62760960.

The previous prime is 172842251. The next prime is 172842289. The reversal of 172842280 is 82248271.

It can be written as a sum of positive squares in 8 ways, for example, as 24964 + 172817316 = 158^2 + 13146^2 .

It is not an unprimeable number, because it can be changed into a prime (172842289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28996 + ... + 34444.

Almost surely, 2^172842280 is an apocalyptic number.

172842280 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 172842280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212877000).

172842280 is an abundant number, since it is smaller than the sum of its proper divisors (252911720).

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

172842280 is a wasteful number, since it uses less digits than its factorization.

172842280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534 (or 5530 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 172842280 is about 13146.9494560525. The cubic root of 172842280 is about 557.0360837309.

The spelling of 172842280 in words is "one hundred seventy-two million, eight hundred forty-two thousand, two hundred eighty".