20179946 has 16 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 9701040.

The previous prime is 20179937. The next prime is 20179961. The reversal of 20179946 is 64997102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9380 + ... + 11328.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^20179946 is an apocalyptic number.

20179946 is a deficient number, since it is larger than the sum of its proper divisors (11269654).

20179946 is a wasteful number, since it uses less digits than its factorization.

20179946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 20179946 is about 4492.2094786419. The cubic root of 20179946 is about 272.2534132678.

The spelling of 20179946 in words is "twenty million, one hundred seventy-nine thousand, nine hundred forty-six".