172058428 has 12 divisors (see below), whose sum is σ = 318814272. Its totient is φ = 80968640.

The previous prime is 172058389. The next prime is 172058431. The reversal of 172058428 is 824850271.

It is a congruent number.

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, 1265068 + ... + 1265203.

It is an arithmetic number, because the mean of its divisors is an integer number (26567856).

Almost surely, 2^172058428 is an apocalyptic number.

It is an amenable number.

172058428 is a deficient number, since it is larger than the sum of its proper divisors (146755844).

172058428 is a wasteful number, since it uses less digits than its factorization.

172058428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530292 (or 2530290 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 172058428 is about 13117.1044060799. The cubic root of 172058428 is about 556.1927415203.

The spelling of 172058428 in words is "one hundred seventy-two million, fifty-eight thousand, four hundred twenty-eight".