20683078 has 8 divisors (see below), whose sum is σ = 33411168. Its totient is φ = 9546024.

The previous prime is 20683063. The next prime is 20683123. The reversal of 20683078 is 87038602.

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, 397726 + ... + 397777.

It is an arithmetic number, because the mean of its divisors is an integer number (4176396).

Almost surely, 2^20683078 is an apocalyptic number.

20683078 is a deficient number, since it is larger than the sum of its proper divisors (12728090).

20683078 is a wasteful number, since it uses less digits than its factorization.

20683078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795518.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20683078 is about 4547.8652134820. The cubic root of 20683078 is about 274.4974977736.

The spelling of 20683078 in words is "twenty million, six hundred eighty-three thousand, seventy-eight".