20347166 has 8 divisors (see below), whose sum is σ = 34880880. Its totient is φ = 8720208.

The previous prime is 20347121. The next prime is 20347169. The reversal of 20347166 is 66174302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20347169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726671 + ... + 726698.

It is an arithmetic number, because the mean of its divisors is an integer number (4360110).

Almost surely, 2^20347166 is an apocalyptic number.

20347166 is a deficient number, since it is larger than the sum of its proper divisors (14533714).

20347166 is a wasteful number, since it uses less digits than its factorization.

20347166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453378.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20347166 is about 4510.7833022658. The cubic root of 20347166 is about 273.0033498853.

The spelling of 20347166 in words is "twenty million, three hundred forty-seven thousand, one hundred sixty-six".