172278996 has 12 divisors (see below), whose sum is σ = 401984352. Its totient is φ = 57426328.

The previous prime is 172278983. The next prime is 172279001. The reversal of 172278996 is 699872271.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7178280 + ... + 7178303.

It is an arithmetic number, because the mean of its divisors is an integer number (33498696).

Almost surely, 2^172278996 is an apocalyptic number.

It is an amenable number.

172278996 is an abundant number, since it is smaller than the sum of its proper divisors (229705356).

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

172278996 is a wasteful number, since it uses less digits than its factorization.

172278996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14356590 (or 14356588 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 172278996 is about 13125.5093615448. The cubic root of 172278996 is about 556.4303079822.

The spelling of 172278996 in words is "one hundred seventy-two million, two hundred seventy-eight thousand, nine hundred ninety-six".