171228650 has 12 divisors (see below), whose sum is σ = 318485382. Its totient is φ = 68491440.

The previous prime is 171228649. The next prime is 171228691. The reversal of 171228650 is 56822171.

It can be written as a sum of positive squares in 3 ways, for example, as 147306769 + 23921881 = 12137^2 + 4891^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1712237 + ... + 1712336.

Almost surely, 2^171228650 is an apocalyptic number.

171228650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

171228650 is a deficient number, since it is larger than the sum of its proper divisors (147256732).

171228650 is a wasteful number, since it uses less digits than its factorization.

171228650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424585 (or 3424580 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 171228650 is about 13085.4365613074. The cubic root of 171228650 is about 555.2971922361.

The spelling of 171228650 in words is "one hundred seventy-one million, two hundred twenty-eight thousand, six hundred fifty".