20147266 has 8 divisors (see below), whose sum is σ = 30324924. Its totient is φ = 10038960.

The previous prime is 20147251. The next prime is 20147273. The reversal of 20147266 is 66274102.

It can be written as a sum of positive squares in 2 ways, for example, as 20115225 + 32041 = 4485^2 + 179^2 .

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

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, 16605 + ... + 17776.

Almost surely, 2^20147266 is an apocalyptic number.

20147266 is a deficient number, since it is larger than the sum of its proper divisors (10177658).

20147266 is a wasteful number, since it uses less digits than its factorization.

20147266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34676.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20147266 is about 4488.5705965262. The cubic root of 20147266 is about 272.1063687929.

The spelling of 20147266 in words is "twenty million, one hundred forty-seven thousand, two hundred sixty-six".