172782140 has 12 divisors (see below), whose sum is σ = 362842536. Its totient is φ = 69112848.

The previous prime is 172782139. The next prime is 172782151. The reversal of 172782140 is 41287271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 172782097 and 172782106.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4319534 + ... + 4319573.

It is an arithmetic number, because the mean of its divisors is an integer number (30236878).

Almost surely, 2^172782140 is an apocalyptic number.

172782140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172782140 is an abundant number, since it is smaller than the sum of its proper divisors (190060396).

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

172782140 is a wasteful number, since it uses less digits than its factorization.

172782140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8639116 (or 8639114 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 172782140 is about 13144.6620344534. The cubic root of 172782140 is about 556.9714698408.

The spelling of 172782140 in words is "one hundred seventy-two million, seven hundred eighty-two thousand, one hundred forty".