20066782 has 8 divisors (see below), whose sum is σ = 31138200. Its totient is φ = 9687384.

The previous prime is 20066777. The next prime is 20066797. The reversal of 20066782 is 28766002.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172932 + ... + 173047.

It is an arithmetic number, because the mean of its divisors is an integer number (3892275).

Almost surely, 2^20066782 is an apocalyptic number.

20066782 is a deficient number, since it is larger than the sum of its proper divisors (11071418).

20066782 is a wasteful number, since it uses less digits than its factorization.

20066782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346010.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20066782 is about 4479.5961871579. The cubic root of 20066782 is about 271.7435497369.

The spelling of 20066782 in words is "twenty million, sixty-six thousand, seven hundred eighty-two".