20166546 has 8 divisors (see below), whose sum is σ = 40333104. Its totient is φ = 6722180.

The previous prime is 20166541. The next prime is 20166551. The reversal of 20166546 is 64566102.

It is an interprime number because it is at equal distance from previous prime (20166541) and next prime (20166551).

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

20166546 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20166541) 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, 1680540 + ... + 1680551.

It is an arithmetic number, because the mean of its divisors is an integer number (5041638).

Almost surely, 2^20166546 is an apocalyptic number.

20166546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20166546 is a wasteful number, since it uses less digits than its factorization.

20166546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361096.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20166546 is about 4490.7177600023. The cubic root of 20166546 is about 272.1931388492.

The spelling of 20166546 in words is "twenty million, one hundred sixty-six thousand, five hundred forty-six".