172782116 has 24 divisors (see below), whose sum is σ = 336859320. Its totient is φ = 76995072.

The previous prime is 172782107. The next prime is 172782131. The reversal of 172782116 is 611287271.

It can be written as a sum of positive squares in 4 ways, for example, as 36966400 + 135815716 = 6080^2 + 11654^2 .

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, 55781 + ... + 58796.

It is an arithmetic number, because the mean of its divisors is an integer number (14035805).

Almost surely, 2^172782116 is an apocalyptic number.

It is an amenable number.

172782116 is a deficient number, since it is larger than the sum of its proper divisors (164077204).

172782116 is a wasteful number, since it uses less digits than its factorization.

172782116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114623 (or 114621 counting only the distinct ones).

The product of its digits is 9408, while the sum is 35.

The square root of 172782116 is about 13144.6611215352. The cubic root of 172782116 is about 556.9714440524.

The spelling of 172782116 in words is "one hundred seventy-two million, seven hundred eighty-two thousand, one hundred sixteen".