20448166 has 4 divisors (see below), whose sum is σ = 30672252. Its totient is φ = 10224082.

The previous prime is 20448163. The next prime is 20448179. The reversal of 20448166 is 66184402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5112040 + ... + 5112043.

It is an arithmetic number, because the mean of its divisors is an integer number (7668063).

Almost surely, 2^20448166 is an apocalyptic number.

20448166 is a deficient number, since it is larger than the sum of its proper divisors (10224086).

20448166 is a wasteful number, since it uses less digits than its factorization.

20448166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224085.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20448166 is about 4521.9648384303. The cubic root of 20448166 is about 273.4543191679.

The spelling of 20448166 in words is "twenty million, four hundred forty-eight thousand, one hundred sixty-six".