20476986 has 8 divisors (see below), whose sum is σ = 40953984. Its totient is φ = 6825660.

The previous prime is 20476933. The next prime is 20477053. The reversal of 20476986 is 68967402.

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

20476986 is an admirable 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, 1706410 + ... + 1706421.

It is an arithmetic number, because the mean of its divisors is an integer number (5119248).

Almost surely, 2^20476986 is an apocalyptic number.

20476986 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.

20476986 is a wasteful number, since it uses less digits than its factorization.

20476986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412836.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 20476986 is about 4525.1503842414. The cubic root of 20476986 is about 273.5827292799.

The spelling of 20476986 in words is "twenty million, four hundred seventy-six thousand, nine hundred eighty-six".