172086012 has 48 divisors (see below), whose sum is σ = 509886720. Its totient is φ = 49167216.

The previous prime is 172086007. The next prime is 172086073. The reversal of 172086012 is 210680271.

172086012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172086012² = 59227191052128288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113058 + ... + 114569.

It is an arithmetic number, because the mean of its divisors is an integer number (10622640).

Almost surely, 2^172086012 is an apocalyptic number.

172086012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172086012 is an abundant number, since it is smaller than the sum of its proper divisors (337800708).

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

172086012 is a wasteful number, since it uses less digits than its factorization.

172086012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227647 (or 227639 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 172086012 is about 13118.1558155100. The cubic root of 172086012 is about 556.2224624334. Note that the first 3 decimals are identical.

It can be divided in two parts, 17208 and 6012, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 172086012 in words is "one hundred seventy-two million, eighty-six thousand, twelve".