217450148 has 12 divisors (see below), whose sum is σ = 380777712. Its totient is φ = 108656520.

The previous prime is 217450141. The next prime is 217450157. The reversal of 217450148 is 841054712.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (217450141) by changing a digit.

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, 9638 + ... + 22973.

It is an arithmetic number, because the mean of its divisors is an integer number (31731476).

Almost surely, 2^217450148 is an apocalyptic number.

It is an amenable number.

217450148 is a deficient number, since it is larger than the sum of its proper divisors (163327564).

217450148 is a wasteful number, since it uses less digits than its factorization.

217450148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34282 (or 34280 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 217450148 is about 14746.1909658054. The cubic root of 217450148 is about 601.3397359159.

The spelling of 217450148 in words is "two hundred seventeen million, four hundred fifty thousand, one hundred forty-eight".