172471898 has 8 divisors (see below), whose sum is σ = 260421600. Its totient is φ = 85664700.

The previous prime is 172471883. The next prime is 172471913. The reversal of 172471898 is 898174271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (172471883) and next prime (172471913).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285248 + ... + 285851.

It is an arithmetic number, because the mean of its divisors is an integer number (32552700).

Almost surely, 2^172471898 is an apocalyptic number.

172471898 is a deficient number, since it is larger than the sum of its proper divisors (87949702).

172471898 is a wasteful number, since it uses less digits than its factorization.

172471898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571252.

The product of its digits is 225792, while the sum is 47.

The square root of 172471898 is about 13132.8556681325. The cubic root of 172471898 is about 556.6379101563.

The spelling of 172471898 in words is "one hundred seventy-two million, four hundred seventy-one thousand, eight hundred ninety-eight".