172021484 has 12 divisors (see below), whose sum is σ = 304665144. Its totient is φ = 84974304.

The previous prime is 172021463. The next prime is 172021501. The reversal of 172021484 is 484120271.

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, 258737 + ... + 259400.

It is an arithmetic number, because the mean of its divisors is an integer number (25388762).

Almost surely, 2^172021484 is an apocalyptic number.

It is an amenable number.

172021484 is a deficient number, since it is larger than the sum of its proper divisors (132643660).

172021484 is a wasteful number, since it uses less digits than its factorization.

172021484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518224 (or 518222 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 172021484 is about 13115.6960928500. The cubic root of 172021484 is about 556.1529305178.

The spelling of 172021484 in words is "one hundred seventy-two million, twenty-one thousand, four hundred eighty-four".