20106278 has 8 divisors (see below), whose sum is σ = 31470768. Its totient is φ = 9616024.

The previous prime is 20106253. The next prime is 20106283. The reversal of 20106278 is 87260102.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218501 + ... + 218592.

It is an arithmetic number, because the mean of its divisors is an integer number (3933846).

Almost surely, 2^20106278 is an apocalyptic number.

20106278 is a deficient number, since it is larger than the sum of its proper divisors (11364490).

20106278 is a wasteful number, since it uses less digits than its factorization.

20106278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437118.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20106278 is about 4484.0024531661. The cubic root of 20106278 is about 271.9217173077.

The spelling of 20106278 in words is "twenty million, one hundred six thousand, two hundred seventy-eight".