172213084 has 12 divisors (see below), whose sum is σ = 303369808. Its totient is φ = 85536000.

The previous prime is 172213081. The next prime is 172213087. The reversal of 172213084 is 480312271.

It is an interprime number because it is at equal distance from previous prime (172213081) and next prime (172213087).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172213081) 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 3 ways as a sum of consecutive naturals, for example, 141957 + ... + 143164.

Almost surely, 2^172213084 is an apocalyptic number.

It is an amenable number.

172213084 is a deficient number, since it is larger than the sum of its proper divisors (131156724).

172213084 is a wasteful number, since it uses less digits than its factorization.

172213084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285276 (or 285274 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 172213084 is about 13122.9982854529. The cubic root of 172213084 is about 556.3593376115.

The spelling of 172213084 in words is "one hundred seventy-two million, two hundred thirteen thousand, eighty-four".