172828149 has 8 divisors (see below), whose sum is σ = 248163552. Its totient is φ = 106355760.

The previous prime is 172828109. The next prime is 172828153. The reversal of 172828149 is 941828271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172828149 - 2⁹ = 172827637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172828149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172828109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215707 + ... + 2215784.

It is an arithmetic number, because the mean of its divisors is an integer number (31020444).

Almost surely, 2^172828149 is an apocalyptic number.

It is an amenable number.

172828149 is a deficient number, since it is larger than the sum of its proper divisors (75335403).

172828149 is a wasteful number, since it uses less digits than its factorization.

172828149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431507.

The product of its digits is 64512, while the sum is 42.

The square root of 172828149 is about 13146.4120200152. The cubic root of 172828149 is about 557.0209028553.

The spelling of 172828149 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, one hundred forty-nine".