20541966 has 8 divisors (see below), whose sum is σ = 41083944. Its totient is φ = 6847320.

The previous prime is 20541949. The next prime is 20541973. The reversal of 20541966 is 66914502.

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

20541966 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711825 + ... + 1711836.

It is an arithmetic number, because the mean of its divisors is an integer number (5135493).

Almost surely, 2^20541966 is an apocalyptic number.

20541966 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.

20541966 is a wasteful number, since it uses less digits than its factorization.

20541966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423666.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20541966 is about 4532.3245691367. The cubic root of 20541966 is about 273.8718120966.

The spelling of 20541966 in words is "twenty million, five hundred forty-one thousand, nine hundred sixty-six".